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American Bird Conservancy's Top 20 Most Threatened
Bird Habitats in the US

Southwest Riparian
"To select the 20 most threatened bird habitats, we considered the severity of historic habitat loss, current threats to remaining habitat, past and ongoing restoration efforts, and the existence of protected areas such as parks, grasslands, wildlife refuges, and reserves. ABC's Green List ( www.abcbirds.org/greenlist.htm ) was used to gauge the value of habitat for conservation priority species. The number of Green List species (which includes birds listed under the Endangered Species Act) found in high concentrations weighted the importance of the habitat for birds."

Selected pages from the report
Here is an overview map showing the extent of historical habitats on a map of the US along with the description of the remnant status of the habitats. We are concerned with Number 5, Southwest Riparian.

"This map shows the range extent of each of the 20 most threatened bird habitats in the United States. Prior to European settlement, these habitats would have occupied most or all of the indicated range. Today, however, most only survive in small, isolated pockets, in total, occupying a tiny fraction of the overall U.S. land area."

These pages, 38 and 39, describe the Southwest Riparian habitat, the historical changes, current threats and conservation.

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This page was updated on 12/28/05