Which description applies to the White-crowned Sparrow's presence in milder areas of the Pacific coast, such as Southern California?

Answer

Often a year-round resident

In milder areas of the Pacific coast, like Southern California, the bird is often a year-round resident, although local populations can be supplemented by migratory flocks.

Which description applies to the White-crowned Sparrow's presence in milder areas of the Pacific coast, such as Southern California?
birdornithologyanimalsongSparrow