Olive-sided Flycatcher (Contopus cooperi)
Genus Contopus / Family Tyrannidae / Order Passeriformes / Class Aves / Phylum Chordata / Kingdom Animalia
An Olive-sided Flycatcher in Frederick County, Maryland (5/25/2008).

An Olive-sided Flycatcher in Frederick County, Maryland (5/25/2008).

An Olive-sided Flycatcher at Finzel Swamp in Garrett County, Maryland (5/21/2011).

An Olive-sided Flycatcher at Finzel Swamp in Garrett County, Maryland (5/21/2011).

An Olive-sided Flycatcher at Finzel Swamp in Garrett County, Maryland (5/21/2011).

An Olive-sided Flycatcher in Hidalgo County, Texas (6/2/2015).
An Olive-sided Flycatcher singing in Garrett County, Maryland (5/21/2011). Listen for 'three-beers!' call near start and end of track. The typical first syllable is kind of swallowed. An excellent dawn chorus of migrants and breeders.

Quick. three. beers. An Olive-sided Flycatcher sings from atop a tall snag at 1000 Acre Heath, Maine (7/7/2013).

An Olive-sided Flycatcher in Anne Arundel Co., Maryland (5/29/2018).
Olive-sided Flycatcher (Contopus cooperi)
Genus Contopus / Family Tyrannidae / Order Passeriformes / Class Aves / Phylum Chordata / Kingdom AnimaliaTotal Records: 24
-
Costa Rica - Puntarenas (1) United States - California (2) United States - Maine (2) United States - Maryland (15) United States - New Jersey (1) United States - Texas (3)
Olive-sided Flycatcher (Contopus cooperi) - Map
For now, here's a fun heat map representation of my personal sightings in iNaturalist courtesy of iNaturalist.