In winter, when the food and water supply stored in their nest is exhausted, some of the ants called workers are sent to find new sources and replenish the colonyâs supplies. The pests feed on: 1  pet food, 2  live and dead insects, 3  and almost anything that people eat.
Anna's Hummingbirds in coastal California, Oregon, Washington, and Vancouver Island do not migrate at all, and a year-round feeder usually means year-round birds. Farther inland, Anna's may move seasonally to make best use of local resources; these movements may be more attuned to elevation than to latitude.
After spending the winter months in Mexico or Central America, male Ruby-throated Hummingbirds (Archilochus colubris) typically arrive in the United States and Canada beginning in late March--earlier along the Gulf Coast, later in New England and Canada. The first females typically begin returning 7-10 days later than the earliest males.