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Wiegardt A, Wolfe J, Ralph CJ, et al. Postbreeding elevational movements of western songbirds in Northern California and Southern Oregon. Ecol Evol. 2017;7(19):7750-7764doi: 10.1002/ece3.3326.
Wiegardt, A., Wolfe, J., Ralph, C. J., Stephens, J. L., & Alexander, J. (2017). Postbreeding elevational movements of western songbirds in Northern California and Southern Oregon. Ecology and evolution, 7(19), 7750-7764. https://doi.org/10.1002/ece3.3326
Wiegardt, Andrew, et al. "Postbreeding elevational movements of western songbirds in Northern California and Southern Oregon." Ecology and evolution vol. 7,19 (2017): 7750-7764. doi: https://doi.org/10.1002/ece3.3326
Wiegardt A, Wolfe J, Ralph CJ, Stephens JL, Alexander J. Postbreeding elevational movements of western songbirds in Northern California and Southern Oregon. Ecol Evol. 2017 Aug 23;7(19):7750-7764. doi: 10.1002/ece3.3326. eCollection 2017 Oct. PMID: 29043031; PMCID: PMC5632634.
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Ecol Evol. 2017 Aug 23;7(19):7750-7764. doi: 10.1002/ece3.3326. eCollection 2017 Oct.

Postbreeding elevational movements of western songbirds in Northern California and Southern Oregon.

Ecology and evolution

Andrew Wiegardt, Jared Wolfe, C John Ralph, Jaime L Stephens, John Alexander

Affiliations

  1. Klamath Bird Observatory Ashland OR USA.
  2. Redwood Sciences Laboratory USDA Forest Service, Pacific Southwest Research Station Arcata CA USA.

PMID: 29043031 PMCID: PMC5632634 DOI: 10.1002/ece3.3326

Abstract

Migratory species employ a variety of strategies to meet energetic demands of postbreeding molt. As such, at least a few species of western Neotropical migrants are known to undergo short-distance upslope movements to locations where adults molt body and flight feathers (altitudinal molt migration). Given inherent difficulties in measuring subtle movements of birds occurring in western mountains, we believe that altitudinal molt migration may be a common yet poorly documented phenomenon. To examine prevalence of altitudinal molt migration, we used 29 years of bird capture data in a series of linear mixed-effect models for nine commonly captured species that breed in northern California and southern Oregon. Candidate models were formulated a priori to examine whether elevation and distance from the coast can be used to predict abundance of breeding and molting birds. Our results suggest that long-distance migrants such as Orange-crowned Warbler (

Keywords: Pacific Northwest; altitudinal movements; birds; breeding; mist net; molt migration; passerines

References

  1. Philos Trans R Soc Lond B Biol Sci. 2005 Feb 28;360(1454):339-57 - PubMed
  2. Ecol Evol. 2017 Aug 23;7(19):7750-7764 - PubMed
  3. J Exp Biol. 1999 Jan;202(1):67-76 - PubMed

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