Cruza-bico-listado (Loxia leucoptera)

RC
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Black-capped Chickadee (Parus atricapillus)

RUC
UCUCUCUCUCUCUCUCUCUCUCUC

Chapim da Lapónia (Parus cinctus)

RR
RRRRRRRRRRRR

Boreal Chickadee (Parus hudsonicus)

RUC
UCUCUCUCUCUCUCUCUCUCUCUC

Grey Jay (Perisoreus canadensis)

RUC
UCUCUCUCUCUCUCUCUCUCUCUC

Bico-duro (Pinicola enucleator)

RUC
UCUCUCUCUCUCUCUCUCUCUCUC

Black-backed Woodpecker (Picoides arcticus)

RR
RRRRRRRRRRRR

American Three-toed Woodpecker (Picoides dorsalis)

RUC
UCUCUCUCUCUCUCUCUCUCUCUC

Downy Woodpecker (Picoides pubescens)

RUC
UCUCUCUCUCUCUCUCUCUCUCUC

Hairy Woodpecker (Picoides villosus)

RUC
UCUCUCUCUCUCUCUCUCUCUCUC

Mais...