Tuesday, October 16, 2012

Blue Jay

In 2010 I blogged about how adult Blue Jays have black linings to the inside of their upper mandibles. Since that post, I have not caught many jays, but I have kept my eye out for a young jay. Finally this October I met with success. Note the whitish color inside the upper bill--one mark of a young Blue Jay.

1 comment:

  1. I've been taught that another nice indicator is the color of the eye (though it can be highly variable, and therefore somewhat subjective): HY BLJAs have a pale gray ring around the brown of their iris. Nice to know about the mouth linings though! As ever (and as you pointed out in your 2010 post), alula + pp covs remain the fastest and easiest method. Hooray for molt limits. :)

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