The family Aegithalidae includes 1 species found in North America.

The Bushtit is found in woods, gardens and cultivated areas. The Long-tailed Tits occur in Eurasia. Long-tailed tits and bushtits are small (8-14 cm), long-tailed and fluffy-plumaged. They feed on insects and spiders gleaned from foliage. They also eat seeds.

The nest is a domed structure placed in a tree fork, composed of plant down, moss, cobwebs and fibers, almost covered with lichens; lined with feathers; side entrance a hole near the top. Eggs 3-8, white or pale lilac, usually with reddish speckles forming a ring around the large end.