Posted by David Fix (216.100.38.181) on September 19, 2000 at 16:29:05:
Re-reading what I posted below, I recognized that what is out of the range of Townsend's is the lack of yellow beneath. But is that a wash through the throat? Earlier comments on the way the black streaks tend to, or appear to, coalesce at the sides of the upper breast would also seem at odds with a Townsend's. So, I'll withdraw that musing. // Is it possible that this might be (if you're not interested in gulls, back out here) a backcross? Would that explain the whitish underparts? It surely wouldn't explain the matter of the coalesced breast streaks. Were we to hear this warbler give a chip-note...