10-13 cm (4-5") Common. Irruptive migrant. Coniferous and mixed forests; feeds on cone seeds and insects; visits seed and suet feeders in winter.
White eyebrow; black line through eye; blue-gray back.
Male: black cap with rich rust underparts.
Female: duller head and paler underparts.
Creeps head first down trees allowing it to find food that "right-side up" birds would miss.
Song: soft nasal "enk" or "ank" like a toy tin horn.