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california gnatcatcher status

This species was recently split from the similar black-tailed gnatcatcher of the Sonoran and Chihuahuan deserts. The California Gnatcatcher was designated as Threatened under the Endangered Species Act in 1993, after an extensive review by federal agencies determined that the rapid loss of coastal sage scrub habitat made the bird worthy of protected status. Compared to California gnatcatcher the cactus wren has a lower maximum observed dispersal distance (up to 10 km), and requires mature cactus stands for nesting, which are patchy within coastal sage scrub habitat. The male is distinguished by his black cap and the female by her gray head, thin white eyering, and brown-washed sides. The California gnatcatcher (Polioptila californica) is a small 10.8 cm (4.3 in) long insectivorous bird which frequents dense coastal sage scrub growth. Ofthese, 24 to 30 pairs occur in Los Angeles County, 224 to 294 pairs in Orange County, 724 to 916 pairs in RiversideCounty, and … Determining occupancy of California Gnatcatchers at a regional scale allows us to track the status of the species throughout its entire southern California range and link population trends to environmental and anthropogenic factors. 1993. Your sightings . (Published 04/09/2004, B-1:1, UTS1800562) UNDATED FILE, RECEIVED 05/21/1997 - This is an undated file photo of the California gnatcatcher, a bird inhabiting coastal sage brush in Southern California. There has been litigation since the 1990s, including several unsuccessful efforts to overturn the listing. This bird species has a range that is fairly small, only about 130,000 square kilometers. Listing Status. Coastal sage scrub habitat is particularly in high demand for development, as it tends to occur in low-lying areas close to the ocean. Because the coastal California Gnatcatcher lives on such valuable land, its “threatened” status creates economic conflicts. californica that might currently exist in the United States. In a huge victory yesterday, the California Gnatcatcher maintained its status as a protected species thanks to a decision by the US Fish and Wildlife Service—influenced by the hard work of Audubon California and our partners. TAXONOMIC STATUS OF THE CALIFORNIA GNATCATCHERS OF NORTHWESTERN BAJA CALIFORNIA, MEXICO ERIC MELLINK, Centro de Investigaci6n Cientifica y Educaci6n Superior de Ensenada, B.C., Apdo. A recent scientific paper by Robert Zink, George Barrowclough, Jonathan Atwood, and Rachelle Blackwell-Rago presents results of genetic research on the California gnatcatcher and calls into question the status of the coastal California gnatcatcher as a subspecies. Subsequent reviews of coastal California gnatcatcher status by Garrett and Dunn (1981) and Unitt (1984) paralleled the findings of Atwood (1980). We listed the coastal California gnatcatcher as one of three subspecies of the California gnatcatcher (Polioptila californica). The Center is protecting the coastal California gnatcatcher from threats posed by transmission lines like the proposed Sunrise Powerlink ... in 2019 a judge dismissed a lawsuit by developers seeking to remove federal protections from the coastal California gnatcatcher. Status and Occurrence of Blue-gray Gnatcatcher (Polioptila ... from Southern California, Arizona, New Mexico, and Southern Texas into Mexico, Belize, Guatemala, Nicaragua and Costa Rica (Kershner et al. Federally Threatened (USFWS) CA State Species of Special Concern (CDFW) VOCALIZATIONS. Each species account is written by leading ornithologists and provides detailed information on bird distribution, migration, habitat, diet, sounds, behavior, breeding, current population status, and conservation. Status and Distribution: The California gnatcatcher (CAGN) was listed as an threatened species by the USFWS on March 30, 1993 (USFWS,1993). Thus, its listing has been contested by groups advocating more development. This bird is often solitary, but joins with other birds in winter flocks. It has dark blue-gray feathers on its back and grayish-white feathers on its underside. As an effort to provide a baseline for future studies, in this paper I estimate the maximum population of P.c. Postal 2732, Ensenada, Baja California or P.O. 2012). The California Gnatcatcher is native to the United States and Mexico. California Gnatcatcher ( Polioptila californica) Avibase taxonomic concepts v. 03 (March 2015): ... Taxonomic status: Species status: full species (sometimes a subspecies) This taxon is considered a subspecies of Polioptila [melanura or californica] (sensu lato) by some authors. Federal status: Threatened. CFWO - Species Status; Listing & Critical Habitat; Recovery Threatened and Endangered Species coastal California Gnatcatcher : The coastal California gnatcatcher measures about 4.5 inches in length. HISTORY AND STATUS OF THE CALIFORNIA GNATCATCHER IN SAN BERNARDINO COUNTY, CALIFORNIA LIAM H. DAVIS, California Department of Fish and Game, 4949 Viewridge Avenue, San Diego, California 92123 ROBERT L. McKERNAN, San Bernardino County Museum, 2024 Orange Tree Lane, Redlands, California 92347 JAMES S. BURNS (deceased), U.S. All potentially suitable gnatcatcher habitat in the project vicinity was surveyed three times. At the current time, there is no immediate concern regarding possible population decline of the California Gnatcatcher. 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