The Pallid Falcon Falco kreyenborgi Is a Color Phase of the Austral Peregrine Falcon (Falco peregrinus cassini)

Abstract The Pallid Falcon (Falco kreyenborgi), a rare form from southern Patagonia and Tierra del Fuego, has, since its discovery in 1925, gained acceptance as a full species. In 1981, we observed 13 Pallid Falcons on the Patagonian Steppe. Four adult Pallid Falcons were paired with normal Peregrin...

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Bibliographic Details
Published in:The Auk
Main Authors: Ellis, David H., Garat, Cesar Peres
Format: Article in Journal/Newspaper
Language:English
Published: Oxford University Press (OUP) 1983
Subjects:
Animal Science and Zoology
Ecology, Evolution, Behavior and Systematics
Austral
Patagonia
Falco peregrinus
peregrine falcon
Tierra del Fuego
Online Access:http://dx.doi.org/10.1093/auk/100.2.269
http://academic.oup.com/auk/article-pdf/100/2/269/30079384/auk0269.pdf
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Summary:Abstract The Pallid Falcon (Falco kreyenborgi), a rare form from southern Patagonia and Tierra del Fuego, has, since its discovery in 1925, gained acceptance as a full species. In 1981, we observed 13 Pallid Falcons on the Patagonian Steppe. Four adult Pallid Falcons were paired with normal Peregrine Falcon (Falco peregrinus cassini) mates. Two normal-phased peregrine pairs produced mixed broods of normal and pallid young. One pair of pallid adults produced only pallid young. These observations lead to the conclusion that the Pallid Falcon is conspecific with and a color phase of the Peregrine Falcon.

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