Hummingbirds in the U.S. migrate primarily based on seasonal changes and food availability. The migration patterns vary by species, but here are the key points regarding their migration:
Spring Migration Timing: Ruby-throated hummingbirds typically begin their northward migration from their wintering grounds in Central America and Mexico in late February to early March
They reach the southern U.S. by mid to late March and continue north, arriving in states like Pennsylvania and Illinois by late April to early May. Most reach their breeding grounds by the end of May
Fall Migration Timing: The fall migration generally starts in late August or September. Hummingbirds retrace their routes back south, with some stragglers lingering until late October.
Factors Influencing Migration Food and Sunlight: Hummingbirds migrate based on the angle of the sun and the availability of food. As daylight increases in spring, it signals the right time for them to migrate north.
Conversely, as food sources dwindle in the fall, they prepare for their journey south
Understanding these patterns can help bird watchers anticipate when to expect these fascinating birds in their areas.