A male pine warbler perched on an icy branch

A male pine warbler perched on an icy branch

© Rolf Nussbaumer Photography/Alamy - 2016-03-11

bird townsend's warbler branch magnolia warbler western tanager yellow american goldfinch songbird perching bird goldfinch twig finch atlantic canary wildlife adaptation scarlet tanager beak old world oriole pine siskin