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    Author(s): W. Scott Richardson; Jean-Luc E. Cartron; David J. Krueper; Lauren Turner; Thomas H. Skinner
    Date: 2000
    Source: In: Cartron, Jean-Luc E.; Finch, Deborah M., tech. eds. Ecology and conservation of the cactus ferruginous pygmy-owl in Arizona. Gen. Tech. Rep. RMRS-GTR-43. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 27-46
    Publication Series: General Technical Report (GTR)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (420 B)

    Description

    In 1993, the Arizona Game and Fish Department (AGFD) began formal population surveys in an attempt to document the numbers and distribution of cactus ferruginous pygmy-owls (Glaucidium brasilianum cactorum) in Arizona. Surveys were initiated to gather information on this little-known subspecies which was considered for listing at the time. Prior to 1993, birders and avian biologists had conducted many informal surveys in a sporadic and opportunistic fashion. However, the information derived from those surveys was limited and often inaccessible, and contributed little to the overall understanding of the distribution and abundance of the species. From 1993 to 1997, even the more formal cactus ferruginous pygmy-owl surveys were limited in number and area covered and resulted in only a handful of cactus ferruginous pygmy-owl detections. With the listing of the cactus ferruginous pygmy-owl as an endangered species, significantly more surveys were conducted in 1998 and 1999 by the AGFD, licensed consultants, land management agencies, and agency contractors. The increased number of pygmy-owl detections during those two years resulted from this additional survey effort.

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    Citation

    Richardson, W. Scott; Cartron, Jean-Luc E.; Krueper, David J.; Turner, Lauren; Skinner, Thomas H. 2000. Chapter 3: The status of the cactus ferruginous pygmy-owl in Arizona: Population surveys and habitat assessment. In: Cartron, Jean-Luc E.; Finch, Deborah M., tech. eds. Ecology and conservation of the cactus ferruginous pygmy-owl in Arizona. Gen. Tech. Rep. RMRS-GTR-43. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 27-46

    Keywords

    cactus ferruginous, pygmy-owl, Arizona, Glaucidium brasilianum cactorum, population surveys, habitat assessment, Arizona Game and Fish Department (AGFD)

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