Bill Walker:
Sierra Valley
Bill Walker:
Yellow-headed Blackbird
Bill Walker:
Yellow-headed Blackbird
Bill Walker:
Wilson's Phalarope
Bill Walker:
Sierra Valley
Bill Walker:
Cliff Swallow
Bill Walker:
Green-tailed Towhee
Bill Walker:
Brewer's Sparrow
Bill Walker:
Calliope Hummingbird
Bill Walker:
Calliope Hummingbird
Bill Walker:
Cassin's Vireo
Bill Walker:
Western Wood-pewee
Bill Walker:
Chipping Sparrow
Bill Walker:
Townsend's Solitaire
Bill Walker:
Wilson's Warbler
Bill Walker:
Sardine Lakes
Bill Walker:
Stellar's Jay
Bill Walker:
Green-tailed Towhee
Bill Walker:
Nashville Warbler
Bill Walker:
Nashville Warbler
Bill Walker:
Fox Sparrow
Bill Walker:
Mountain Chickadee