Habitat use by nesting and brood rearing northern pintails on the Yukon-Kuskokwim delta, Alaska

Article Abstract:

The Yukon-Kuskokwim Delta in Alaska is an important breeding area for ducks and geese but there is little information about their habitat types. A new study of northern pintails uses a digital habitat map assembled from infrared aerial photos to identify habitat types and availability. It is found that most pintails's nests are in low and intermediate sedge meadow, characterized by many seasonal saline lakes and tidal sloughs. It is assumed that such habitats are used because of the lack of predators. Further details of the study are presented.

Natural history, Habitats, Wildlife management, Ducks, Yukon River

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Survival of breeding Pacific common eiders on the Yukon-Kuskokwim Delta, Alaska

Article Abstract:

The capture-recapture of nesting hens in Yukon-Kuskokwim Delta, Alaska, sites was used to study the survival of breeding Pacific common eiders. Studies reveal that their adult survival may not be affected by environmental disruptions and factors such as predation and winter conditions and may be functionally fixed.

Eider, Birds, Bird breeding, Wilderness survival, Report, Yukon-Charley Rivers National Preserve, Alaska

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Annual survival and site fidelity of northern pintails banded on the Yukon-Kuskokwin Delta, Alaska

Article Abstract:

Annual survival recovery rates and fidelity rates for pintails banded on Yokon-Kuskokwim Delta (YKD) were discussed. The findings suggested that some level of subpopulation structuring might exist in northern pintails.

Goods & services distribution, Channels of Distribution, Environmental aspects, Distribution, Nest building, Water birds, Company distribution practices

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