Flycatchers in the genus Myiarchus are notoriously difficult to identify except by their vocalizations. Most sources emphasize subtle differences in the distribution of red in the tail, but this widespread species of Eastern North America is perhaps more readily identified by the combination of more extensive bright lemon yellow belly contrasting with mouse gray chest. Note also the pale base to the bill. This is a canopy species, preferring to hunt from treetops. Myiarchus flycatchers are unusual for their habit of nesting in tree cavities including old woodpecker holes, and for often incorporating a cast-off snakeskin in their nests.