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.
Ruby-throated Hummingbird (Archilochus colubris) The Ruby-throated Hummingbird is by far the most common species that breeds in the eastern half of North America, although most states have sporadic Rufous sightings, and Bob and Martha Sargent have banded eight other hummingbird species as winter visitors to five southeastern states.