Birds

Alcatraz Island is in the actual bay of Bahia Kino and is primarily a nesting site for many species of sea birds. Accumulated piles of bird poop dominate parts of the island and are from specific...

Type of Content: Gallery

The Center for Biological Diversity and Defenders of Wildlife hereby formally petition the U.S. Fish and Wildlife Service (also “Service”) to list one of the following entities of cactus...

Type of Content: Reports, Papers, Journal Articles
Red-faced warbler
Type of Content: Image Content
Red-faced warbler
Type of Content: Image Content

Devil’s Canyon is located in Pinal County Arizona approximately 6 km east of the town of Superior in the Globe Ranger District of the Tonto National Forest. The area is generally rugged with deep...

Type of Content: Reports, Papers, Journal Articles

Cactus Ferruginous Pygmy-owl (Glaucidium brasilianum cactorum) photos. These photos are by Aaron Flesch (contact) and Sky Jacobs (contact). If you would like to use them, please contact one of us...

Type of Content: Gallery

Details of trip taken to Sonora in March 2011 in search of the masked bobwhite, which is on the brink of extinction in the wild in Sonora as of 2011.

Type of Content: Reports, Papers, Journal Articles
Phainopepla female
Type of Content: Image Content
Type of Content: Image Content
Type of Content: Image Content
Zone-tailed hawk on nest in saguaro
Type of Content: Image Content
Type of Content: Image Content
  • cactus ferruginous pygmy-owl (Glaucidium ridgwayi cactorum)

Oct. 5th, 2011 finding by the U.S. Fish and Wildlife Service that the cactus ferruginous pygmy-owl (Glaucidium ridgwayi cactorum) does not warrant protection from the Endangered Species Act.

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Type of Content: Reports, Papers, Journal Articles
Red-tailed hawk landing on saguaro
Type of Content: Image Content
Pair of black-throated sparrows on Celtis pallida
Type of Content: Image Content
Western screech-owl in saguaro cavity
Type of Content: Image Content
pyrrhuloxia
Type of Content: Image Content
black-throated sparrow
Type of Content: Image Content
black-throated sparrow
Type of Content: Image Content
black-tailed gnatcatcher
Type of Content: Image Content
Black-tailed gnatcatcher
Type of Content: Image Content
Western screech-owl
Type of Content: Image Content

The western and southern edges of the Madrean Sky Island region are poorly defined and have received little study. After exploring mountains in these areas, we documented range extensions and...

Type of Content: Reports, Papers, Journal Articles
  • rufous-capped warbler

This bold warbler prefers lush thorn-scrub canyons. It commonly forages in the understory or even at ground level.

Type of Content: Species Profile

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