52 images 26 classes
by EY
2965 images 28 classes
by Misha
445 images 20 classes
by BirdWatcher
5597 images 36 classes
acorn-woodpecker annas-hummingbird blue-jay blue-winged-warbler carolina-chickadee carolina-wren chipping-sparrow common-eider common-yellowthroat dark-eyed-junco eastern-bluebird eastern-towhee harris-hawk hermit-thrush indigo-bunting juniper-titmouse northern-cardinal northern-mockingbird northern-waterthrush orchard-oriole
48562 images 555 classes
Aberts Towhee Acorn Woodpecker Allens Hummingbird Adult Male Allens Hummingbird Female immature American Avocet American Black Duck American Coot American Crow American Dipper American Goldfinch Breeding Male American Goldfinch Female or Nonbreeding Male American Kestrel Adult male American Kestrel Female immature American Oystercatcher American Pipit American Redstart Adult Male American Redstart Female or juvenile American Robin Adult American Robin Juvenile American Tree Sparrow
by zilpha
285 images 24 classes
1760 images 28 classes
by pub
168 images 113 classes