Hummingbird Migration 2024 Maryland Dates. Hummingbird migration season gets underway in august, sending the birds flying to warm destinations thousands of miles away to last out the cold winter months. View map hummingbird sighting view.

Hummingbirds begin their fall migration at different times depending on the species and local conditions, but early august through late september is the key period. As north america moves into spring, hummingbirds are migrating north.