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Eastern Bluebird (Sialia sialis) feeds Tree Swallow (Tachycineta bicolor) nestlings: Support for location-based decision rule

Danielle P. Williams, Auteur ; Margaret C. Brittingham, Auteur ; Julian D. Avery, Auteur

Dans Wilson Journal of Ornithology (The) (131(3) October, 2019)

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Contemporary divergence of island bird plumage

Julian D. Avery, Auteur ; Phillip Cassey, Auteur ; Julie L. Lockwood, Auteur

Dans Journal of Avian Biology (45(3) MAY 2014)

Although the diversity in avian plumage coloration is striking, there is little known about the rate with which colour diverges. Eastern bluebirds Sialia sialis bermudensis on the island of Bermuda are considered endemic based upon differences i[...]

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