Matthew C. Perry, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 136
[Obituary] Francis Morley Uhler, 1902-1990 [Obituary] Francis Morley Uhler, 1902-1990
No abstract available.
Authors
Matthew C. Perry
Remembering Francis Morley Uhler Remembering Francis Morley Uhler
No abstract available.
Authors
Matthew C. Perry
[Book review] The Steel Trap in North America--The Illustrated Story of its Design, Production and Use with Furbearing and Predatory Animals, from its Colorful Past to the Present Controversy, by Richard Gerstell [Book review] The Steel Trap in North America--The Illustrated Story of its Design, Production and Use with Furbearing and Predatory Animals, from its Colorful Past to the Present Controversy, by Richard Gerstell
No abstract available.
Authors
Matthew C. Perry
Patuxent: The dream becomes reality Patuxent: The dream becomes reality
No abstract available.
Authors
Matthew C. Perry
Behaviour of captive canvasbacks Aythya valisineria fed different diets during winter Behaviour of captive canvasbacks Aythya valisineria fed different diets during winter
Time activity budget studies were conducted on captive Canvasbacks manintained on ad libitum diets with varying levels of protein and energy during the winter of 1978-79 and 1979-80. No differences could be detected in the behaviour of the ducks as a result of the diets they received. Differences due to season and sex were observed for some behaviours. Activity decreased (P
Authors
Matthew C. Perry, B. Williams, H.H. Obrecht
Vantage point for Visitor -- Patuxent new dream Vantage point for Visitor -- Patuxent new dream
No abstract available.
Authors
Matthew C. Perry
[Book review] Story of extinct birds told with accuracy, verve: Extinct Birds, by Errol Fuller. Facts on File Publications, 1988 [Book review] Story of extinct birds told with accuracy, verve: Extinct Birds, by Errol Fuller. Facts on File Publications, 1988
No abstract available.
Authors
Matthew C. Perry
Food habits and distribution of wintering canvasbacks, Aythya valisineria, on Chesapeake Bay Food habits and distribution of wintering canvasbacks, Aythya valisineria, on Chesapeake Bay
Baltic clams (Macoma balthica) were the predominant food items of 323 canvasbacks (Aythya valisineria) collected throughout Chesapeake Bay during 1970–1979. Natural vegetation constituted 4% of the food volume. Widgeongrass (Ruppia maritima) and redhead grass (Potamogeton perfoliatus) constituted the greatest percent volume and frequency of occurrence among the plant species, whereas...
Authors
Matthew C. Perry, F.M. Uhler
Sex specificity of behavioral dominance and fasting endurance in wintering canvasbacks: Experimental results Sex specificity of behavioral dominance and fasting endurance in wintering canvasbacks: Experimental results
Hand-reared canvasbacks (Aythya valisineria) of varying sex ratios were maintained in pens during winter 1980-81 (3M-3F, 6M-0F, 0M-6F) and winter 1981-82 (4M-2F, 2M-4F) and fed two diets (control and stress). They were observed during feeding trials to determine intrasexual and intersexual aggressive activity. There was little evidence that either diet or sex ratio affected the total...
Authors
Matthew C. Perry, J.D. Nichols, M.J. Conroy, H.H. Obrecht, B. Williams
Science and Products
Filter Total Items: 136
[Obituary] Francis Morley Uhler, 1902-1990 [Obituary] Francis Morley Uhler, 1902-1990
No abstract available.
Authors
Matthew C. Perry
Remembering Francis Morley Uhler Remembering Francis Morley Uhler
No abstract available.
Authors
Matthew C. Perry
[Book review] The Steel Trap in North America--The Illustrated Story of its Design, Production and Use with Furbearing and Predatory Animals, from its Colorful Past to the Present Controversy, by Richard Gerstell [Book review] The Steel Trap in North America--The Illustrated Story of its Design, Production and Use with Furbearing and Predatory Animals, from its Colorful Past to the Present Controversy, by Richard Gerstell
No abstract available.
Authors
Matthew C. Perry
Patuxent: The dream becomes reality Patuxent: The dream becomes reality
No abstract available.
Authors
Matthew C. Perry
Behaviour of captive canvasbacks Aythya valisineria fed different diets during winter Behaviour of captive canvasbacks Aythya valisineria fed different diets during winter
Time activity budget studies were conducted on captive Canvasbacks manintained on ad libitum diets with varying levels of protein and energy during the winter of 1978-79 and 1979-80. No differences could be detected in the behaviour of the ducks as a result of the diets they received. Differences due to season and sex were observed for some behaviours. Activity decreased (P
Authors
Matthew C. Perry, B. Williams, H.H. Obrecht
Vantage point for Visitor -- Patuxent new dream Vantage point for Visitor -- Patuxent new dream
No abstract available.
Authors
Matthew C. Perry
[Book review] Story of extinct birds told with accuracy, verve: Extinct Birds, by Errol Fuller. Facts on File Publications, 1988 [Book review] Story of extinct birds told with accuracy, verve: Extinct Birds, by Errol Fuller. Facts on File Publications, 1988
No abstract available.
Authors
Matthew C. Perry
Food habits and distribution of wintering canvasbacks, Aythya valisineria, on Chesapeake Bay Food habits and distribution of wintering canvasbacks, Aythya valisineria, on Chesapeake Bay
Baltic clams (Macoma balthica) were the predominant food items of 323 canvasbacks (Aythya valisineria) collected throughout Chesapeake Bay during 1970–1979. Natural vegetation constituted 4% of the food volume. Widgeongrass (Ruppia maritima) and redhead grass (Potamogeton perfoliatus) constituted the greatest percent volume and frequency of occurrence among the plant species, whereas...
Authors
Matthew C. Perry, F.M. Uhler
Sex specificity of behavioral dominance and fasting endurance in wintering canvasbacks: Experimental results Sex specificity of behavioral dominance and fasting endurance in wintering canvasbacks: Experimental results
Hand-reared canvasbacks (Aythya valisineria) of varying sex ratios were maintained in pens during winter 1980-81 (3M-3F, 6M-0F, 0M-6F) and winter 1981-82 (4M-2F, 2M-4F) and fed two diets (control and stress). They were observed during feeding trials to determine intrasexual and intersexual aggressive activity. There was little evidence that either diet or sex ratio affected the total...
Authors
Matthew C. Perry, J.D. Nichols, M.J. Conroy, H.H. Obrecht, B. Williams
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government