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.
Like their neighbors, they assumed the ruby-throated hummingbirds that summered in their magnolia and live oak-filled yard were about to head south to the Tropics. But a funny thing happened about ten years ago: âI started hearing hummingbirds during the winter,â says Annabeth.