Progress 04/01/78 to 09/30/11
Outputs
No progress to report
Impacts
No progress to report
Publications
- No publications reported this period
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Progress 01/01/05 to 12/31/05
Outputs
A growing problem in the world today is the rate at which species are going extinct. Among birds, 12% of all species worldwide are officially recognized as endangered. The causes of this situation are: overharvesting, exotic species, habitat loss and ecosystem stress. The goals of this project are to determine the causes of endangerment for selected bird species and to develop conservation strategies that will allow their recovery. To date this project has accomplished these goals with some of the world's rarest and most endangered birds, including Whooping Cranes, California Condors, Peregrine Falcons and others.
Impacts
As a result of this project every one of the endangered birds that has been the subject of our work is better off than it was before. Several species either have been or are proposed for delisting (e.g., the Peregrine Falcon was delisted last year).
Publications
- No publications reported this period
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Progress 01/01/04 to 12/31/04
Outputs
A growing problem in the world today is the rate at which species are going extinct. Among birds, 12% of all species worldwide are officially recognized as endangered. The causes of this situation are: overharvesting, exotic species, habitat loss and ecosystem stress. The goals of this project are to determine the causes of endangerment for selected bird species and to develop conservation strategies that will allow their recovery. To date this project has accomplished these goals with some of the world's rarest and most endangered birds, including Whooping Cranes, California Condors, Peregrine Falcons and others.
Impacts
As a result of this project every one of the endangered birds that has been the subject of our work is better off than it was before. Several species either have been or are proposed for delisting (e.g., the Peregrine Falcon was delisted last year).
Publications
- No publications reported this period
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Progress 01/01/03 to 12/31/03
Outputs
A growing problem in the world today is the rate at which species are going extinct. Among birds, 12% of all species worldwide are officially recognized as endangered. The causes of this situation are: overharvesting, exotic species, habitat loss and ecosystem stress. The goals of this project are to determine the causes of endangerment for selected bird species and to develop conservation strategies that will allow their recovery. To date this project has accomplished these goals with some of the world's rarest and most endangered birds, including Whooping Cranes, California Condors, Peregrine Falcons and others.
Impacts
As a result of this project every one of the endangered birds that has been the subject of our work is better off than it was before. Several species either have been or are proposed for delisting (e.g., the Peregrine Falcon was delisted last year).
Publications
- Mills, S., J. M. Scott and S. A. Temple. 2003. Ecology and management of small populations. In Braun, C. (Editor) Techniques for Wildlife Research and Management. The Wildlife Society Maryland.
- Temple, S. and J. Cary. 2003. Wisconsin Birds: A Checklist with Migration Graphs (3rd edition). Wisconsin Society for Ornithology. Madison, WI.
- Estades, C. and Temple. 2003. Spatial dynamics of bird communities in a forest landscape mosaic. Ecology.
- Estades, C. and S. Temple. 2003. Nest success of the Thorn-tailed Rayadito in a forest landscape mosaic. Wilson Bulletin.
- Estades, C. and S. Temple. 2003. Mist-nets versus point counts in the estimation of forest bird abundances in south-central Chile. Boletin Chileno de Ornithologia.
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Progress 01/01/02 to 12/31/02
Outputs
A growing problem in the world today is the rate at which species are going extinct. Among birds, 12% of all species worldwide are officially recognized as endangered. The causes of this situation are: overharvesting, exotic species, habitat loss and ecosystem stress. The goals of this project are to determine the causes of endangerment for selected bird species and to develop conservation strategies that will allow their recovery. To date this project has accomplished these goals with some of the world's rarest and most endangered birds, including Whooping Cranes, California Condors, Peregrine Falcons and others.
Impacts
As a result of this project every one of the endangered birds that has been the subject of our work is better off than it was before. Several species either have been or are proposed for delisting (e.g., the Peregrine Falcon was delisted last year).
Publications
- Vaughan, C. and S. Temple. 2002. Conservacion del Jaguar en centroamericana. Pp. 351-363. In Rabinowitz, A et al. (Eds.). Los Jaguares en el Nuevo Milenio. Wildlife Conservation Society. New York.
- Temple, S.A. 2002. Olin Sewall Pettingill. Living Bird Quarterly
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Progress 01/01/01 to 12/31/01
Outputs
A growing problem in the world today is the rate at which species are going extinct. Among birds, 12% of all species worldwide are officially recognized as endangered. The causes of this situation are: overharvesting, exotic species, habitat loss and ecosystem stress. The goals of this project are to determine the causes of endangerment for selected bird species and to develop conservation strategies that will allow their recovery. To date this project has accomplished these goals with some of the world's rarest and most endangered birds, including Whooping Cranes, California Condors, Peregrine Falcons and others.
Impacts
As a result of this project every one of the endangered birds that has been the subject of our work is better off than it was before. Several species either have been or are proposed for delisting (e.g., the Peregrine Falcon was delisted last year).
Publications
- Flaspohler, D. and S. Temple. 2000. Nest success, nest concealment and nest site selection in the Hermit Thrush. Auk
- Flaspohler, D. and S. Temple. 2000. Edge effects on density and nest success of breeding birds in forested landscape. Ecological Applications
- Robertson, M..and S. Temple. 2000. Predicting the distribution and abundance of forest songbirds in central Wisconsin. In J.M. Scott et al. Predicting Species Occurrences: Issues of scale and accuracy. Island Press, Washington, DC.
- Temple, S. 2000. Habitat model development: presence and absence. In J.M. Scott et al. Predicting Species Occurrences: Issues of scale and accuracy. Island Press, Washington, DC.
- Flaspohler, D. and S. Temple. 2000. Relationship between nest success and concealment for two ground-nesting passerines. Journal of Field Ornithology
- Undersander, D. et al. 2000. Grassland birds: fostering habitats using rotational grazing. Cooperative Extension Publication A3715
- Flaspohler, D. J., S. A. Temple, and R. Rosenfield. 2000. The effects of forest edges on Ovenbird demography in a managed forest landscape. Conservation Biology.
- Hayes, F. and S. Temple (Eds.). 2000. Studies in Trinidad ornithology (honoring Richard ffrench). University of the West Indies Press.
- Temple, S.A. and J. R. Cary. 2000. Reserve design and management. In. Turner, M. et al. (Eds.) Illustrating concepts and tools in landscape ecology. Springer-Verlag, New York.
- Temple, S.A. 2000. Individuals, Populations and Communities: The Ecology of Birds. In The World of Birds. Cornell Laboratory of Ornithology, Ithaca, NY.
- Temple, S. 2000. Threatened birds of Trinidad and Tobago: making predictions from theory. In Hayes, F. and S. Temple (Eds.). Studies in Trinidad ornithology (honoring Richard ffrench). University of the West Indies Press, St. Augustine, Trinidad
- Temple, S. and G. White. 2000. Wintering Dickcissels in Trinidad: numbers and impacts on rice crops. In Hayes, F. and S. Temple (Eds.). Studies in Trinidad ornithology (honoring Richard ffrench). University of the West Indies Press, St. Augustine, Trinidad
- Temple, S. 2000. Species account of the Dickcissel. In Birds of North America. American Ornithologists Union. New York
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Progress 01/01/00 to 12/31/00
Outputs
A growing problem in the world today is the rate at which species are going extinct. Among birds, 12% of all species worldwide are officially recognized as endangered. The causes of this situation are: overharvesting, exotic species, habitat loss and ecosystem stress. The goals of this project are to determine the causes of endangerment for selected bird species and to develop conservation strategies that will allow their recovery. To date this project has accomplished these goals with some of the world's rarest and most endangered birds, including Whooping Cranes, California Condors, Peregrine Falcons and others.
Impacts
As a result of this project every one of the endangered birds that has been the subject of our work is better off than it was before. Several species either have been or are proposed for delisting (e.g., the Peregrine Falcon was delisted last year).
Publications
- Temple, S.A. 2000. Individuals, Populations and Communities: The Ecology of Birds. In The World of Birds. Cornell Laboratory of Ornithology, Ithaca, NY.
- Temple, S. 2000. Threatened birds of Trinidad and Tobago: making predictions from theory. In Hayes, F. and S. Temple (Eds.). Studies in Trinidad ornithology (honoring Richard ffrench). University of the West Indies Press, St. Augustine, Trinidad
- Temple, S. and G. White. 2000. Wintering Dickcissels in Trinidad: numbers and impacts on rice crops. In Hayes, F. and S. Temple (Eds.). Studies in Trinidad ornithology (honoring Richard ffrench). University of the West Indies Press, St. Augustine, Trinidad
- Temple, S. 2000. Species account of the Dickcissel. In Birds of North America. American Ornithologists Union. New York
- Temple, S.A. and J. R. Cary. 2000. Reserve design and management. In. Turner, M. et al. (Eds.) Illustrating concepts and tools in landscape ecology. Springer-Verlag, New York.
- Flaspohler, D. J., S. A. Temple, and R. Rosenfield. 2000. The effects of forest edges on Ovenbird demography in a managed forest landscape. Conservation Biology.
- Hayes, F. and S. Temple (Eds.). 2000. Studies in Trinidad ornithology (honoring Richard ffrench). University of the West Indies Press.
- Flaspohler, D. and S. Temple. 2000. Nest success, nest concealment and nest site selection in the Hermit Thrush. Auk
- Flaspohler, D. and S. Temple. 2000. Edge effects on density and nest success of breeding birds in forested landscape. Ecological Applications
- Robertson, M..and S. Temple. 2000. Predicting the distribution and abundance of forest songbirds in central Wisconsin. In J.M. Scott et al. Predicting Species Occurrences: Issues of scale and accuracy. Island Press, Washington, DC.
- Temple, S. 2000. Habitat model development: presence and absence. In J.M. Scott et al. Predicting Species Occurrences: Issues of scale and accuracy. Island Press, Washington, DC.
- Flaspohler, D. and S. Temple. 2000. Relationship between nest success and concealment for two ground-nesting passerines. Journal of Field Ornithology
- Undersander, D. et al. 2000. Grassland birds: fostering habitats using rotational grazing. Cooperative Extension Publication A3715
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Progress 01/01/99 to 12/31/99
Outputs
Recent assessments indicate that nearly one bird species in ten is threatened with extinction, yet for many of these bird species the nature of the threats to them is so poorly understood that recovery programs are difficult to design. Even when recovery programs have been proposed, there is often a need for additional information to facilitate the conservation programs. This project has helped provide information needed for the recovery of 26 species of birds, including most recently, several neotropical migrants that breed in North America and winter in the tropics.
Impacts
Results of research have improved significantly the prospects for recovery of all species studied. For example, this year the peregrine falcon was officially removed from the US endangered species list, in part because of efforts under this project. Similarly, whooping cranes and California condors are increasing in numbers in part due to efforts under this project. The dickcissel, a neotropical migrant whose population has declined faster than any other species in North America has recently stabilized its numbers as a direct result of work under this project.
Publications
- Temple, S. et al. 1999. Nesting birds and grazing cows: can they coexist? Studies in Avian Biology
- Basili, G. and S.A. Temple. 1999. Dickcissels on their non-breeding range. Studies in Avian Biology
- Basili, G. and S. A. Temple. 1999. Demographic characteristics of Dickcissel populations during winter. Studies in Avian Biology
- Flaspohler, D. and S. Temple. 1999. Edge-sensitive species and early successional species are not the same issues. Journal of Forestry
- Estades, C. and S.A. Temple. 1999. Deciduous forest bird communities in a fragmented landscape dominated by exotic pine plantations. Ecological Applications
- Temple, S. 1999. The birds of Aldo Leopold. Living Bird 18: 8-16.
- Winters, L. et al. 1998. Cat predation of birds and other wildlife. American Bird Conservancy, Washington, DC
- Klekowski, E. and S. Temple. 1999. Mangrove mutations associated with mercury deposited in molted feathers of Scarlet Ibises.Environmental Pollution 105:185-189.
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Progress 01/01/97 to 12/31/97
Outputs
A growing problem in the State of Wisconsin, the nation and the world is the accelerating rate at which species of wild plants and animals are declining and becoming extinct. Preventing species that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered or declining rapidly. For these species we have monitored population trends, identified critical environmental threats, developed management programs that will facilitate their recovery, participated in recovery efforts, and developed general principles that can be used to guide recovery efforts.
Impacts
(N/A)
Publications
- Temple, S.A., J.R. Cary and R. Rolley. 1997. Wisconsin Birds: A Seasonal and Geographical Guide (2nd Edition), University of Wisconsin Press, Madison.
- Temple, S. A. 1997. Maintaining the integrity of managed ecosystems: the challenges of preserving rare species. In M. Boyce and A. Haney (eds.) Ecosystem management: Applications for sustainable forest and wildlife resources. Yale University Press, New Haven, CT.
- Paine, L. et al. 1997. Managing rotationally grazed pastures for forage production and grassland birds. American Forage and Grassland Council Proceedings Pp. 26-30.
- Temple, S. A. 1997. An academic perspective: The role of the university in conservation biology. Pp.5-7. In Meffe, G. and C. Carroll. Principles of Conservation Biology (2nd ed.). Sinauer Assoc., Sunderland, MA.
- Temple, S.A. . 1997. Easing the travails of migratory birds. Environment 40: 6-32.
- Temple, S.A. 1997. Terrestrial vertebrates of tallgrass prairies. Pp. 401-414. In Packard, S. and C. Mutel (Eds.). The tallgrass restoration handbook. Island Press, Washington, DC
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Progress 01/01/96 to 12/30/96
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
- Temple, S. A. 1996. Distributional ecology of selected plants and animals on Trinidad's Five Islands Archipelago. Living World 1995: 16-36.
- Paine, L. et al. 1996. Ecological and socio-economic considerations for biomass energy crop production. Biomass and Bioenergy 10: 231-242.
- Brittingham, M. C. and S. A. Temple. 1996. Vegetation around parasitized and non-parasitized nests within deciduous forest. Journal of Field Ornithology 67: 406-413.
- Temple, S. A. 1996. Priorities for shrike research and conservation. Proceeding.
- Wolf, C.M. et al. 1996. Avian and mammalian translocations; Update and reanalysis of a 1987 survey. Conservation Biology 10: 1142-1154.
- Temple, S.A. 1996. Ecological principles, biodiversity and the electric utility industry. Environmental Management 20:873-875.
- Temple, S.A. 1996. A review of Fundamentals of Conservation Biology. Quarterly Review of Biology 71:434-435.
- Temple, S. A. 1996. Avian travellers. Science 272:1896-1897.
- Temple, S.A. 1996. The Checklist Connection. Living Bird 15: 7-13.
- Coleman, J.S. and S.A. Temple. 1996. On the prowl. Wisconsin Natural Resources 20: 4-9.
- Temple, S. A. 1996. When and where are shrike populations limited. Proceedings of the Western Foundation of Vertebrate Zoology 6: 5-11.
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Progress 01/01/93 to 12/30/93
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/92 to 12/30/92
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rico parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/91 to 12/30/91
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/90 to 12/30/90
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/89 to 12/30/89
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/88 to 12/30/88
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/87 to 12/30/87
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during the first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/86 to 12/30/86
Outputs
A growing problem in the state of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this projects are all endangered: whooping cranes, California condors, Adnean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during the first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/85 to 12/30/85
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine alcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/84 to 12/30/84
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery for these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 10/01/82 to 10/30/83
Outputs
A growing problem in the State of Wisconsin, the nation, and the world is the accelerating rate at which species of wild plants and animals are becoming extinct. Preventing species of birds that are endangered with extinction from being lost is a major wildlife management challenge. The various bird species being studied under this project are all endangered: whooping cranes, California condors, Andean condors, peregrine falcons, Hawaiian crows and honeycreepers, Hawaiian goose and duck, Puerto Rican parrot. For each of these birds, during the past year we have played a major role in developing plans for the recovery of these critically endangered species. We identified critical migration habitat for cranes, developed procedures for studying and captive-breeding condors, studied pesticides threats to peregrine falcons on their tropical wintering areas, studied and developed a program for captive breeding of endangered birds of Hawaii, and studied the Puerto Rican
parrot to identify threats to the survival of young birds during their first year of life.
Impacts
(N/A)
Publications
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Progress 01/01/82 to 12/30/82
Outputs
We have studied the ecology of endangered whooping cranes, Hawaiian crows, peregrine falcons, bald eagles and California condors, and we have developed management programs to help them recover. Migrant cranes have been radio-tracked in order to identify habitat on their migration route that is critical to their survival. We found that Hawaiian crows have declined because of reproductive failures (infertility and loss of nestlings), and we developed a management procedure (double-clutching, hand-rearing and subsequent return to nests in the wild) that should double crow reproductive success. We found that peregrine falcons from the North American arctic spend the winter in South American habitats heavily contaminated with pesticides. Management efforts in the arctic will not succeed as long as pesticide use on the falcon's wintering grounds remains heavy. Bald eagles that winter in the upper midwest feed heavily on dead or dying waterfowl, many the victims of
lead-poisoning. We found that eagles feeding on lead-poisoned waterfowl are also at risk. California condors will require a drastic, last-ditch program to avoid extinction. We tested proposed procedures on Andean condors and found that condors can be safely trapped, marked and studied in the field. We also found that capture-reared condors can be successfully returned to the wild.
Impacts
(N/A)
Publications
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Progress 01/01/81 to 12/30/81
Outputs
We have studied the ecology of endangered whooping cranes, Hawaiian crows, peregrine falcons, bald eagles and California condors, and we have developed management programs to help them recover. Migrant cranes have been radio-tracked in order to identify habitat on their migration route that is critical to their survival. We found that Hawaiian crows have declined because of reproductive failures (infertility and loss of nestlings), and we developed a management procedure (double-clutching, hand-rearing and subsequent return to nests in the wild) that should double crow reproductive success. We found that peregrine falcons from the North American arctic spend the winter in South American habitats heavily contaminated with pesticides. Management efforts in the arctic will not succeed as long as pesticide use on the falcon's wintering grounds remains heavy. Bald eagles that winter in the upper midwest feed heavily on dead or dying waterfowl, many the victims of
lead-poisoning. We found that eagles feeding on lead-poisoned waterfowl are also at risk. California condors will require a drastic, last-ditch program to avoid extinction. We tested proposed procedures on Andean condors and found that condors can be safely trapped, marked and studied in the field. We also found that capture-reared condors can be successfully returned to the wild.
Impacts
(N/A)
Publications
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Progress 01/01/80 to 12/30/80
Outputs
These research projects are intended to reveal information about the ecology of several endangered species of birds; the ultimate aim is to provide information that will be useful to federal and state agencies in managing the endangered birds. Endangered whooping cranes suffer heavy mortality when migrating and certain areas of wetland habitat along their migration route may be critical for the birds survival. We are using radio telemetry to follow migrating cranes and determine the sources of mortality on migration and the types of habitats that the birds use, within certain areas, such as the Garrison Diversion Unit in North Dakota, extensive wetland alteration may be affecting migrating cranes. Endangered bald eagles may be suffering from lead poisoning as a result of feeding on hunter-crippled waterfowl or on waterfowl that have died of lead-poisoning. We are determining the degree of threat by experimenting with different dietary sources of lead in captive birds
of prey. Endangered Hawaiian crows are reporducing so poorly that the population is declining rapidly. We are studying their nesting biology in an attempt to determine exactly what factors are responsible for poor reproduction. California condors are very near extinction, and a drastic last-ditch effort is being made to save them by captive breeding and restocking of captive-produced birds. We are developing techniques that will be needed to make this program succeed.
Impacts
(N/A)
Publications
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Progress 01/01/79 to 12/30/79
Outputs
These research projects are intended to reveal information about the ecology of several endangered species of birds; the ultimate aim is to provide information that will be useful to federal and stage agencies in managing the endangered birds. Endangered whooping cranes suffer heavy mortality when migrating and certain areas of wetland habitat along their migration route may be critical for the birds survival. We are using radio telemetry to follow migrating cranes and determined the sources of mortality on migration and the types of habitats that the birds use; within certain areas, such as the Garrison Diversion Unit in North Dakota, extensive wetland alteration may be affecting migrating cranes. Endangered bald eagles may be suffering from lead poisoning as a result of feeding on hunter-crippled waterfowl or on waterfowl that have died of lead-poisoning. We are determining the degree of threat by experimenting with different dietary sources of lead in captive
birds of prey. Endangered Hawaiian crows are reproducing so poorly that the population is declining rapidly. We are studying their nesting biology in an attempt to determine exactly what factors are responsible for poor reproduction.
Impacts
(N/A)
Publications
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