A 1957 study by Joe Marshall that surveyed birds in the Pine-Oak Woodland in a number of Southern Arizona and Mexican mountain ranges that would later be known as Sky Islands.
Tags: birds,chiricahua mountains,huachuca mountains,madrean archipelago,peloncillo mountains,pinaleno mountains,research,santa catalina mountains,santa rita mountains,sky island

Cover Page from Birds of Pine-Oak Woodland in Southern Arizona and Adjacent Mexico.
Tags: birds,chiricahua mountains,huachuca mountains,madrean archipelago,peloncillo mountains,pinaleno mountains,research,santa catalina mountains,santa rita mountains,sky island

Mustang Mountains from a ridge above Boston Gulch.
Tags: arizona,boston gulch,coronado national forest,mount bruce,mustang mountains,mustang peak,nogales ranger district,north west dome,pima county,santa rita mountains,the biscuit

Southwestern Pricklypoppy in Boston Gulch.
Tags: arizona,boston gulch,coronado national forest,nogales ranger district,pima county,santa rita mountains,southwestern pricklypoppy

Grizzly.
Tags: arizona,boston gulch,coronado national forest,grizzly,mining,nogales ranger district,pima county,santa rita mountains

Yucca Flowers above Boston Gulch.
Tags: arizona,boston gulch,coronado national forest,nogales ranger district,pima county,santa rita mountains,schotts yucca

Snowy Santa Rita Mountains from the start of the hike up Mount Bruce.
Tags: arizona,empire-cienega area of critical environmental concern,las cienegas national conservation area,mustang mountains,santa cruz county,santa rita mountains,tucson field office,united states

11 12 42 04 PM.
Tags: arizona,coronado national forest,elephants head,mount fagan,mount wrightson,pima county,rincon mountain wilderness,rincon mountains,santa catalina ranger district,santa rita mountains,united states

Air Release Valve.
Tags: arizona,boston gulch,coronado national forest,mining,nogales ranger district,pima county,santa rita mountains,santa rita water and mining company

Fallen Tank above Kentucky Camp.
Tags: arizona,coronado national forest,kentucky camp,nogales ranger district,pima county,santa rita mountains,tank

Old Valves above Boston Gulch.
Tags: arizona,boston gulch,coronado national forest,gate valves,mining,nogales ranger district,pima county,santa rita mountains,santa rita water and mining company

Long Shadows.
Tags: alison,arizona,boston gulch,charles,coronado national forest,nogales ranger district,pima county,santa rita mountains,shadow

The Lake in the Santa Rita Mountains.
Tags: arizona,arizona state trust land,pima county,santa rita mountains,state trust land,the lake,water

Hilltop View.
Tags: arizona,coronado national forest,empire mountains,mount wrightson,pima county,rincon mountain wilderness,rincon mountains,santa catalina ranger district,santa rita mountains,un 4769,united states

Empirita Ranch Sign on the Empirita Ranch Road with the Santa Rita Mountains in the Background.
Tags: arizona state trust land,blm,empirita ranch,empirita ranch road,mount fagan,santa rita mountains,sign

Canyon Wall near The Lake.
Tags: arizona,arizona state trust land,pima county,rock,santa rita mountains,state trust land

Mount Bruce from North West Dome.
Tags: arizona,empire mountains,empire-cienega area of critical environmental concern,las cienegas national conservation area,mount bruce,mustang mountains,north west dome,santa catalina mountains,santa cruz county,santa rita mountains,the biscuit,tucson field office,united states