There is an excellent article on hybrid Golden-winged/Blue-winged Warblers
in the latest issue of Birding. In general, Lawrence's are said to sing
variations on both BW or GW songs (or even, intergrades). I have never heard
a Lawrence's singing, the only one I ever saw was a female last autumn, but
have heard a number of Brewster's (the dominant hybrid) and they have sung
songs identical to BW (that is, Bzzz-BZZZ), GW (Bzzz-BZZZ-bzzz-bzz-bzz) or
in one case, both songs more or less alternately (talk about being
confused!) What did your bird sound like?

Gail Mackiernan

on 05/16/2005 8:03 AM, Frances Curnow at  wrote:

> A yellow bird with black markings (and white wing bar) sung from bare
> branches numerous times yesterday -- in the trees along my townhouse
> backyard.   According to the pictures in Peterson's Field Guide, it
> appears to be a Lawrence's Warbler, not a common yellow throat, or any
> of the other warblers.   I haven't found its vocalization on the web to
> compare to what I heard.
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