Polioptila caerulea:
Cassin's Vireo nest
Polioptila caerulea:
Warbling Vireo nest
Polioptila caerulea:
Steller's Jay nest
Polioptila caerulea:
Yellow-billed Magpie nest--Pica nuttalli
Polioptila caerulea:
Clark's Nutcracker sublingual pouch
Polioptila caerulea:
Clark's Nutcracker juv
Polioptila caerulea:
American Crow nest
Polioptila caerulea:
Barn Swallow nest--Hirundo rustica
Polioptila caerulea:
Brown Creeper nest--Certhia americana
Polioptila caerulea:
Pacific Wren nest--Troglodytes pacificus
Polioptila caerulea:
MacGillivray's Warbler first-fall
Polioptila caerulea:
Yellow Warbler nest