CNHA



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About CNHA

Canyonlands Natural History Association is a nonprofit organization established to assist the scientific and educational efforts of the National Park Service, Bureau of Land Management, and the USDA Forest Service in southeast Utah.

Photo: CNHA sales area in the Arches Visitor Center
Breeding Bird Inventory along the Colorado and Green Rivers in Canyonlands National Park, Utah 2000-2001.

Matthew J. Johnson, Jennifer A. Holmes, and Maureen Stuart
USGS, Southwest Biological Science Center, Colorado Plateau Research Station, Northern Arizona University

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Abstract

Breeding Bird Inventory along the Colorado and Green Rivers in Canyonlands National Park, Utah 2000-2001. The bird community along the Colorado River and the Green River in Canyonlands National Park enjoys a far greater species richness, abundance, and density than in the arid sections of the Park. The Colorado and Green River corridors provide vital breeding sites for neo-tropical migrants and year-round residents, yet very little is known about the bird community in Canyonlands National Park.

The main objective of this two-year study was to develop and implement standardized, baseline inventories of the breeding birds and the habitats they use along the Colorado and Green Rivers in Canyonlands National Park, Utah. Understanding the relationship between riparian vegetation and the habitat requirements of a bird species or community is of key importance for future river management and avian resource conservation.


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