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1 March 2013 Leucistic Adult Large Cactus-Finch (Geospiza conirostris) on Española Island, Galápagos: A Potential Continuation of Nestling Beak Color
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Abstract

We present the first detailed report of an apparently leucistic Darwin's Finch, observed on Punta Cevallos, Española Island, Galápagos (01° 23.61′ S, 89° 37.11′ W). We suggest that the unusual adult phenotype is a continuation of nestling beak color, which is usually masked by melanin in adults. Tissue-specific differences in beta-carotene dioxygenase 2 enzyme activity may explain the variation in yellow pigmentation in this individual's legs and beak.

2013 by the Wilson Ornithological Society
Jacquelyn K. Grace, Emily M. Tompkins, and David J. Anderson "Leucistic Adult Large Cactus-Finch (Geospiza conirostris) on Española Island, Galápagos: A Potential Continuation of Nestling Beak Color," The Wilson Journal of Ornithology 125(1), 201-204, (1 March 2013). https://doi.org/10.1676/12-093.1
Received: 31 May 2012; Accepted: 1 September 2012; Published: 1 March 2013
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