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Plumage varies, with breeding (MAR-AUG) sporting brighter colors and "crown chestnut; forehead black or chestnut, striped black; chin white; throat clear ash gray". Non-breeding (SEP-MAR)
M/F differ, with male sporting a (more) complete crown in breeding. However, in non-breeding BOW notes M/F similar with males sporting more rufous crowns as a reliable indicator.