Red-breasted Nuthatch.

The titmice or chickadees (Parinae) are fluffy little gray birds, the one
crested. the other with a black cap. They are also expert climbers, though not
such wonderful gymnasts as the nuthatches. These cousins are frequently seen
together in winter woods or in the evergreens about houses. Chickadees are
partial to tree-tops, especially to the highest pine cones, on which they hang
fearlessly. Cheerful, constant residents, retreating to the deep woods only to
nest.
Tufted Titmouse.
Chickadee.

Family Sylviidae: KINGLETS AND GNATCATCHERS

The kinglets (Regulinae) are very small greenish-gray birds, with highly
colored crown patch, that are seen chiefly in autumn, winter, and spring south
of Labrador. Habits active; diligent flitters among trees and shrubbery from
limb to limb after minute insects. Beautiful nest builders. Song remarkable
for so small a bird.
Golden-crowned Kinglet.
Ruby-crowned Kinglet.

The one representative of the distinctly American subfamily of gnatcatchers
(Polioptilinae) that we have, is a small blue-gray bird, whitish below. It is
rarely found outside moist, low tracts of woodland, where insects abound.
These it takes on the wing with wonderful dexterity. It is exceedingly
graceful and assumes many charming postures. A bird of trees, nesting in the
high branches. A bird of strong character and an exquisitely finished though
feeble songster.
Blue-gray Gnatcatcher.