Recent flights of Common Nighthawks locally provided a good opportunity to study the different ages and sexes passing through. It seems a good mix of adults of both sexes and young of the year migrate together. I posted a single photo of each of the three easily identifiable plumages and some comments describing the ID features, if anyone is interested.
adult male: https://flic.kr/p/oCRCfp
adult female: https://flic.kr/p/oCSvte
juvenile: https://flic.kr/p/oCRXS1
Good Birding,
Louis Bevier
Fairfield
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