Alder Flycatcher (Empidonax alnorum) is a small bird that migrates to Alaska for its breeding season. It's estimated that some 12,000,000 Alder Flycatchers travel to Alaska.
Alder Flycatchers usually breed in interior Alaska in an area some 150,000 square miles. They are able to breed after their first year and clutch sizes are typically 3-4 eggs. Nesting area are commonly alders, willows, and various shrubs often near bodies of water, streams, or wetlands.