La Madera (Magdalena)

Small stripped red beetle in pine/oak forest
Type of Content: Image Content

Measurements taken on the skull of a bear shot in northern Sonora, Mexico, in 1976 revealed that the skull is from a brown bear (Ursus arctos). The skull appears to be that of a juvenile (sex...

Type of Content: Reports, Papers, Journal Articles
Thornscrub before and after heavy February 2011 frost

These photos were taken by Aaron Flesch before and after the February 2 and 3, 2011 frost. This unusually severe frost event was the worst freeze seen across Sonora and Arizona at least 50 years....

Type of Content: Image Content

Breeding bird survey trip to the south end of the range.

Type of Content: Gallery
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