Matthew C. Perry, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 131
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. Kenneth Williams, H.H. Obrecht
Patuxent: The dream becomes reality Patuxent: The dream becomes reality
No abstract available.
Authors
Matthew C. Perry
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. Kenneth Williams
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
Science and Products
Filter Total Items: 131
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. Kenneth Williams, H.H. Obrecht
Patuxent: The dream becomes reality Patuxent: The dream becomes reality
No abstract available.
Authors
Matthew C. Perry
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. Kenneth Williams
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
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