Mexico is recognized globally as a mega-diversity country. The state of Sonora has very diverse fauna, fora, and vegetation. The diversity of horned lizards in the genus Phrynosoma (Phrynosomatidae) in the state of Sonora is a reflection of the landscape and biotic diversity. In this paper, we summarize the distribution and ecology of eight species of Phrynosoma in Sonora.

To address obligations linked to the recently approved Pima County Multi-species Conservation Plan, I identified and estimated the quality of habitat for the Cactus Ferruginous Pygmy-Owl (Glaucidium brasilianum cactorum; hereafter “pygmy-owls”) and surveyed owls on Pima County Conservation Lands in south-central Arizona in 2017. To identify habitat and prioritize areas for surveys across a vast region of County lands, I used a model of habitat quality developed in neighboring Sonora…

Species profile for Phaulothamnus spinescens can be found here.

Near Nacori Chico, Sonora.

A young Incilius mccoyi. They tend to lose their color as they age into adults.