posted November 4th, 2009; last edited November 18th, 2010 –– David Sibley

Olive-sided Flycatcher

Olive-sided Flycatcher Contopus borealis

Updates and corrections:

A misleading presentation in the Sibley Guides leads some observers to the conclusion that the white patches on the back are shown only by juveniles. The fluffy white patches sometimes shown by this species have nothing to do with age.

read more here: Olive-sided Flycatcher – white patches and age in fall

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