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    Assessing Migratory Double Breeding Through Complementary Specimen Densities and Breeding Records

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    Peterson_assessing_migratory_double.pdf (677.1Kb)
    Issue Date
    2012-02-01
    Author
    Rohwer, Sievert
    Rohwer, Vanya G.
    Peterson, A. Townsend
    Navarro-Sigüenza, Adolfo G.
    English, Philina
    Publisher
    University of California Press
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    We re-evaluate the plausibility that five species of birds that breed in late summer in northwestern Mexico are migratory double breeders that first bred earlier in the same season to the north. We use data aggregated from scientific collections to generate abundance indices that adjust counts of specimens in collections by collecting effort, which we measure as the number of passerines collected in the same region and time period as the species of interest. Our abundance indices generally show displaced phenologies, such that presumed double breeders arrive and breed early in the north, then later in northwestern Mexico. We also compare breeding records for these regions, but these records could not be corrected for effort. Our phenologies suggest that the breeding populations of the Yellow-billed Cuckoo (Coccyzus americanus) from the western U.S. and northwestern Mexico may be derived from birds that bred earlier in eastern North America. Similarly, Orchard Orioles (Icterus spurius) breeding in late summer in northwestern Mexico and on the Mexican plateau may be derived from birds that attempted to breed earlier in North America. Our abundance indices and other new data suggest migratory double breeding is less likely in the Hooded Oriole (I. cucullatus) and probably not occurring in the Yellow-breasted Chat (Icteria virens) and Cassin's Vireo (Vireo cassinii).
    Description
    This is the publisher's version, also available electronically from http://www.bioone.org/doi/abs/10.1525/cond.2012.110064.
    URI
    http://hdl.handle.net/1808/13346
    DOI
    https://doi.org/10.1525/cond.2012.110064
    ISSN
    0010-5422
    Collections
    • Ecology and Evolutionary Biology Scholarly Works [1176]
    • Distinguished Professors Scholarly Works [918]
    Citation
    Sievert Rohwer , Vanya G. Rohwer , A. Townsend Peterson , Adolfo G. Navarro-Sigüenza, Philina English. 2012. Assessing migratory double breeding through complementary specimen densities and breeding records. Condor 114:1-14. http://dx.doi.org/10.1525/cond.2012.110064

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    785-864-8983

    KU Libraries
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    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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