BirdNote: Why Some Birds Sing In The Winter
By late January, some resident birds, such as the Northern Mockingbird, are beginning their spring singing.
When you step outside on a particularly sunny day this winter, a Fox Sparrow like the one pictured here may be warming up for the coming spring.
And as far north as British Columbia, Pacific Wrens are singing in earnest by mid-February. So the singing season never entirely stops.