Answer:

titmice

Answer	Crossword Clue
TITMICE	Small birds related to chickadees
TITMICE	Chickadee's kin
TITMICE	Chickadees' cousins

TITMICE	They may be tufted
TITMICE	Small songbirds
TITMICE	Tufted birds
TITMICE	Small birds
TITMICE	Chickadee relatives
TITMICE	Small birds.
TITMICE	Chickadees.
TITMICE	Very small birds.

TITMICE	Nuthatches' cousins
TITMICE	Chickadees, e.g.
TITMICE	Tufted songbirds