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.
The best way to find a hummer nest is to wait for the female to lead you to it. This may not work, however, since the nest can be up to 1.5km or more from a good feeding area. Among Ruby-throated Hummingbirds, nests may be in hardwoods or evergreens from about one to 20 meters (three to 60 feet) from the ground.Often they are situated in the crotch of in an outer, down-turned branch overhanging water, but there are many exceptions. Hummingbird nests are fairly fragile and usually do not last through the winter--especially in locations where there is heavy snowfall. 2  It is not uncommon, however, for a female Ruby-throated Hummingbird to use the same tree--even the same branch--in successive years.