Response to northern pintail breeding populations to drought, 1961-92
Article Abstract:
Data gathered during the 1960s revealed that northern pintail populations which flew north of Alberta and Sasketchewan diminished as the number of available ponds in the region decreased. However, an analysis of recent overflight data, collected during the 1980s up to 1992, revealed that there was no direct relationship between pintail populations and the availability of ponds. Although inconclusive, it has been suggested that hunting and predation could account for the changes in pintail populations.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1995
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Overwinter distribution of northern pintail populations in North America
Article Abstract:
A study of northern pintails (Anas acuta) of the US reveals that pintails are found among specific wintering populations and that breeding ground affiliations are less stable population units for pintails than wintering ground affiliations. Pintails have the greatest fidelity to areas which are near the coast or large bodies of water, such as central California, the Texas-Louisiana Gulf Coast and Washington-northwestern Oregon.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1993
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Survival of northern pintails banded during winter in North America, 1950-88
Article Abstract:
Band-recovery data is used to estimate the survival rates of northern pintails (Anas acuta) banded in winter. Females have a lower survival rate than males. Geographic variation does not play a major role in survival of pintails. Although there is little annual variation in the survival rates of the male and female pintails, there are long-term variations in the survival rates of the birds.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1993
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