Pazifikzaunkönig Troglodytes pacificus

Most easily recognized by its incredible voice; complex, high-pitched whistled song rings through dense, moss-covered forests. Not as impressive to see as it is to hear. Very small, dark brown, with short tail often cocked upright. Western counterpart of Winter Wren (formerly considered one species). Two species barely overlap in range. Note differences in song and darker, warmer plumage of Pacific.