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    Author(s): Teresa J Lorenz
    Date: 2016
    Source: Northwestern . 97(3): 252-256.
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (375.0 KB)


    Between-year breeding dispersal has not been previously documented in White-headed Woodpeckers (Picoides albolarvatus). Therefore, resightings of color-banded adults on previous years’ breeding territories have been considered a means of estimating annual adult survival. From 2013 to 2015, I observed 2 cases of between-year breeding dispersal by adult color-banded White-headed Woodpeckers in central Washington. Mean dispersal distance was 6.9 km, and both adults were successful in fledging young in their new territories. Without extensive searches outside of previous years’ territories, such dispersal events could have been classified as mortalities leading to annual survival estimates that were biased low.

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    Lorenz, Teresa J. 2016. Between-year breeding dispersal by White-headed Woodpeckers: A caution about using color bands to estimate survival. Northwestern Naturalist. 97(3): 252-256.


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    Breeding dispersal, color band, markresight, Picoides albolarvatus, survivorship, White-headed Woodpecker.

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