western or pacific slope flycatcher

forest highpitched woodlands eye ring mosquero del pacashy fico ornithology forage tyrannidae yellow olive aves passerine passeriformes north america western tyrant insectivore insect eater song bird washington migrate tail beak feathers wing canada perching birdwatching outdoors songbird empidonax difficilis perched white bars green wildlife pacific slope flycatcher avian nature animal