[EBB Sightings] Yellow-orange variant House Finches

	il.comcast.net>

Good point - the cattle feed could be loaded with whatever carotenoid
pigment (or precursor) that results in bright yellow.

Jaan Lepson



On Wed, June 10, 2009 12:38 pm, bacpab at comcast.net wrote:
> For the third year now, I've had at least 2 yellow-orange variant male
> House Finches in my garden in the Oakland Hills.
> Last weekend in Tracy, in San Joaquin Co, I observed the yellowest male
> that I've ever seen near a diary. I wondered if the abundance of cattle
> feed had anything to do with its color.
> Pat Bacchetti
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-- 
Jaan Lepson

University of California
Space Sciences Laboratory
7 Gauss Way
Berkeley, CA 94720-7451