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.
Migration Status. Rufous Hummingbirds winter in Mexico and south Texas. In recent years, they have been wintering more frequently in the gulf states and have attempted to winter in the northeast. In the spring, they migrate up the Pacific Coast, reaching as far north as south-central Alaska, and they are thus the northernmost breeding hummingbird.