Ecology and Conservation of the Cactus Ferruginous Pygmy-owl in Arizona, Issue 43

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U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2000 - Birds - 68 pages
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This report is the result of a cooperative effort by the Rocky Mountain Research Station and the USDA Forest Service Region 3, with participation by the Arizona Game and Fish Department and the Bureau of Land Management. It assesses the state of knowledge related to the conservation status of the cactus ferruginous pygmy-owl in Arizona. The population decline of this owl has been attributed to the loss of riparian areas before and after the turn of the 20th century. Currently, the cactus ferruginous pygmy-owl is chiefly found in southern Arizona in xeroriparian vegetation and wellstructured upland desertscrub. The primary threat to the remaining pygmy-owl population appears to be continued habitat loss due to residential development. Important information gaps exist and prevent a full understanding of the current population status of the owl and its conservation needs.

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Contents

Introduction
1
A Historical Perspective on the Population Decline
17
The Status of the Cactus Ferruginous PygmyOwl in Arizona
27

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