Monday, February 28, 2011
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Answer by Tony Leukering
This week's quiz bird's reddish-orange chest and sides and blue tail and wings with no suggestion of wing bars really leave us only two options. The trick is determining what in the picture allows us to separate male Eastern Bluebird from male Western Bluebird, as it is difficult, if not impossible, to do so via the tone of the blue color. As noted specifically in their responses by Thomas Hall and first-time respondent Julie Rouse, the trick is throat color: red in Eastern, blue or blue-gray in Western.
I took this picture of a male Western Bluebird on 22 March 2006 at Chatfield SP, Jefferson Co., CO.
Just a quick caution repeating previous cautions: Please separate thoughts on sex/age/subspecies/etc. from those of your species answer. Using this week's quiz as an example, should someone have submitted an answer of "Female Western Bluebird," I would have had no choice but to consider it incorrect, as it is a male. Should you wish to provide other such details, put those in parentheses or a separate sentence or... there are lots of ways that folks have done it. Thanks.
Incorrect species provided as answers:
Eastern Bluebird - 5
Bay-breasted Warbler - 1
Congratulations to the 23 of 29 getting the quiz correct:
Answer: Western Bluebird