Oriole feeders help both wintering and migrating orioles For more information.
Orioles haven't started migrating yet, but a few overwintered here and there. Several Baltimores and at least one Bullock's Oriole wintered in various places in Louisiana and Florida. Bullock's Orioles wintered in both Half Moon Bay and Banner, California. Oriole migration is expected to start in April Although orioles leave the tropics because their internal rhythms, the length of daylight, and the position of the sun in the tropical sky all tell them it's time to go, most of their actual flights will depend on weather conditions. While you're waiting for their migration to begin, learn more about the weather patterns that will affect them at the Journey North Weather Primer .