Crédito de la foto: Original uploader was ZeWrestler at en.wikipedia

Crédito de la foto: Picasa

Crédito de la foto: Stolz, Gary M.

Lugar: Owings Mills, Maryland, United States
Crédito de la foto: David Illig

Crédito de la foto: brendan.lally from Delta, Canada

Lugar: Santa Rosa (Sonoma County, California, US)
Crédito de la foto: Gerald and Buff Corsi

Crédito de la foto: Phil Myers, Museum of Zoology, University of Michigan

Lugar: Holiday Beach Migratory Observatory, Ontario
Crédito de la foto: Tanya Dewey, Animal Diversity Web, University of Michigan Museum of Zoology

Lugar: Malheur National Wildlife Refuge, Oregon
Crédito de la foto: Phil Myers, Museum of Zoology, University of Michigan

Crédito de la foto: Tanya Dewey, Animal Diversity Web, University of Michigan Museum of Zoology