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.
Hummingbird Life Span. What is the life span of a hummingbird? Although the general thought is that, once a hummingbird survives its first year, it may live another 3-4 years, there are some surprising longevity records. One broad-tailed hummingbird is known to have survived for at least 12 years. You can find these records here: Longevity Records Of North American Birds.