Phainopepla on Condalia globosa

Phainopepla on Condalia globosa

Population trends, extinction risk, and conservation guidelines for Ferruginous Pygmy-Owls in the Sonoran Desert

Zone-tailed Hawk flying and calling

Zone-tailed Hawk flying and calling

Distribution, Abundance, Habitat, and Biogeography of Breeding Birds in the Sky Islands and adjacent Sierra Madre Occidental of northwest Mexico

Cactus ferruginous pygmy-owl feeding its young a lizard

Estatus Y Distribucion Del Buho Manchado Mexicano (Strix Occidentalis Lucida) En Sonora, Mexico

A Distributional Survey Of The Birds Of Sonora, Mexico

Status and conservation of old-growth forests and endemic birds in the pine-oak zone of the Sierra Madre Occidental, Mexico

Five-stripped sparrow pair

Greater roadrunner

Greater roadrunner

Sulfer-bellied flycatcher

sulfer-bellied flycatcher

Black-capped gnatcatcher

black-capped gnatcatcher