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El Aribabi Conservation Ranch lies within the ecotone (sometimes called an edge) between the Sierra Madre Occidental and the Rocky Mountains and between the Sonoran and Chihuahuan Deserts. This meeting of four distinct bio-regions in one spot generates a population of species that is more generous and more diverse than any of its contributors. This makes El Aribabi an ideal place for observation and study of the species of the Sonoran Sky Islands.

Sonoran Desert Toads in amplexus4, cattle tank, Sierra Azul - J. Rorabaugh

Herpetofauna List

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Amphibian and reptile species documented by vegetation community type at Rancho El Aribabi through July 2013. – Jim Rorabaugh, FWS (retired) SPECIES RANCHO EL ARIBABI AMPHIBIANS Vegetation… Read more »

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Insect Lists

Insect Lists

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Insects observed by John Palting at Rancho El Aribabi, Sonora in August 2009. Family Scientific Name Order Orthoptera Acrididae Brachystola magna Dactylotum variegatum Parapomala pallida Poecilotettix pantherina… Read more »

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Canyon Spotted Whiptails, Sierra Azul - J. Rorabaugh

Herpetofauna Lists

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Amphibian and reptile species documented by vegetation community type at Rancho El Aribabi through July 2013.   – Jim Rorabaugh, FWS (retired) SPECIES RANCHO EL ARIBABI AMPHIBIANS Vegetation… Read more »

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About Us

Just 35 miles south of the U.S. Border our 10,000 acre ranch lies nestled in the Sierra Azul mountains. The landscape includes mountains, hills, hillocks, canyons, grassland and a river runs through it providing diverse habitats that support thousands of species, many threatened or endangered.

The northernmost documented jaguar in Mexico was photographed in these canyons. Reptiles and amphibians thrive in our river and adjacent wetlands.

Nearly 200 species of birds have been photographed here and new ones are found frequently.

Views from the generous veranda of the Casa Grande include sweeping vistas and a unique eye-level surveillance of the high canopy above the Rio Cocospera. The ranch house is an ideal setting for intense corporate work sessions with no distractions, a home base for researchers or refuge after an exhausting day of birding or hiking.

Rancher, Carlos Robles Elias and his family strive to maintain the bio-region in its natural state while still operating as a functioning cattle ranch. The Casa Grande is a warm, Mediterranean/ranch style abode that will transport you back to the ranches of old Mexico. Whether you come to study, work or play, the Robles family will make your stay at El Aribabi one that you will talk about for years to come.

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