A conspicuous summer resident and migrant, this flycatcher chooses the most conspicuous dead spar or exposed branch on which to perch. From here it surveys the air space around it and flies out to capture flying insects from the air. It nests in coniferous forests and places its lichen-covered cup- nest far out on the end of a horizontal branch. Adults can be very aggressive toward intruders that approach the nest. The Olive-sided Flycatcher winters primarily in South America.
The four-digit banding code is OSFL.
