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Temporal patterns of migration, molt, and fat storage among high-latitude passerine migrants

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dc.contributor.author Benson, Anna-Marie
dc.date.accessioned 2015-03-16T23:46:03Z
dc.date.available 2015-03-16T23:46:03Z
dc.date.issued 2000-08
dc.identifier.uri http://hdl.handle.net/11122/5126
dc.description Thesis (M.S.) University of Alaska Fairbanks, 2000 en_US
dc.description.abstract Aspects of migration, fattening, and molt in trans-continental passerine migrants were examined during spring and autumn migration in Fairbanks, Alaska (64°50’ N, 147°50’ W). From 1992-1998, 25,718 birds of 18 species were banded. Based on median dates of spring and autumn passage, species-level estimates of the duration of breeding range occupation ranged from 48 to 129 days. Adults departed significantly later than immatures in 11 of the 18 species examined and significantly earlier than immatures in only one species, the Alder Flycatcher. Adults had significantly higher fat scores than immatures in most species, but these differences were attributable to the influence of ambient temperatures, length of preceding night, and the time of day the bird was captured. Adults of many species overlapped the final stages of the prebasic molt with autumn migration, and individuals that did so had less stored fat than those that were not molting. en_US
dc.language.iso en_US en_US
dc.title Temporal patterns of migration, molt, and fat storage among high-latitude passerine migrants en_US
dc.type Thesis en_US
dc.type.degree ms en_US
dc.identifier.department Biology and Wildlife en_US


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