Hermit Thrush by Hubert Pottiau
Subject: Central Park, NYC: Leucistic Hermit ThrushDate: Sun Apr 24 2016 16:52 pmA very interesting and unusual looking bird. However, I would not call this leucistic as there are no areas that show a complete lack of pigment. This is clearly what is technically known as a dilution. It is caused by one or a number of genes that deposit melanin in a lower than normal concentration. Peter PostPeter Post
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