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Population dynamics of long-tailed ducks breeding on the Yukon-Kuskokwim Delta, Alaska

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Population dynamics of long-tailed ducks breeding on the Yukon-Kuskokwim Delta, Alaska; 2009; Article; Journal; Arctic; Schamber, Jason L.; Flint, Paul L.; Grand, J. Barry; Wilson, Heather M.; Morse, Julie A.

Summary

Population estimates for long-tailed ducks in North America have declined by nearly 50% over the past 30 years. Life history and population dynamics of this species are difficult to ascertain, because the birds nest at low densities across a broad range of habitat types. Between 1991 and 2004, we collected information on productivity and survival of long-tailed ducks at three locations on the Yukon-Kuskokwim Delta. Clutch size averaged 7.1 eggs, and nesting success averaged 30%. Duckling survival to 30 days old averaged 10% but was highly variable among years, ranging from 0% to 25%. Apparent annual survival of adult females based on mark-recapture of nesting females was estimated at 74%. We combined these estimates of survival and [...]

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Type Scheme Key
local-index unknown 70003503
local-pk unknown 70003503
series unknown Arctic

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journalArctic
parts
typevolume
value62
typeissue
value2
typePublication Place
valueCalgary, Alberta
languageEnglish
citationTypeArticle

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