Panama Canopy Tower trip with Naturetrek, 29 April to 6 May 2009
All photographs copyright Paul Gale Bird Photography
Note, lower mandible appears dark, and primary projection is long, but no blotching on undertail coverts. Eastern and Western Wood Pewee are best separated by call, but Eastern is by far the more common wood pewee in Panama, and the whitish throat is clear.
Birds of Panama