![]() ![]() Improving habitat quality through management could increase food availability and enhance wren productivity and survival. Developing management strategies to increase the stability of wren populations in years with low rainfall is of particular importance if droughts become more frequent, intense and prolonged in the future, as predicted by climate change models.Įvaluating the degree of genetic connectivity among coastal Cactus Wren populations in southern California is a high priority need for effective management of populations occupying preserved sites within a fragmented landscape. This region has experienced multiple years of drought which may have affected wren abundance by reducing arthropod food resources, which could lower fecundity and/or survival. In addition to isolation, steep declines in Cactus Wren populations have been detected recently in the southern part of San Diego County. This stage of the life history is poorly understood and requires more research to answer key questions.Ī coastal Cactus Wren displays its singing power. ![]() One key process by which genetic connectivity is achieved is juvenile dispersal, where young birds leave their natal territory and establish their own breeding territory elsewhere. This could limit the ability to adapt to changing environments as a result of loss of genetic variability. As a result, Cactus Wren populations have been diminished in size and distribution, and occur largely as islands in a matrix of generally unsuitable habitat.Īmong the possible consequences of fragmentation on Cactus Wren viability is genetic isolation. Limited naturally by the patchy distribution of this habitat, Cactus Wren populations have become further fragmented in recent decades by urbanization, habitat degradation, and stochastic events such as wildfire. GardnerĬhecklist of Vertebrates of the United States, the U.S.The coastal Cactus Wren ( Campylorhynchus brunneicapillus) is a fragmentation-sensitive resident species in southern California requiring thickets of cholla or prickly pear cactus for nesting. ![]() Territories, and CanadaĪs-yet (2003) unpublished manuscript from 1998īanks, R. StarnesĬhecklist of Vertebrates of the United States, the U.S. "Zoonomen - Zoological Nomenclature Resource" maintained by Alan P. Zoonomen - Zoological Nomenclature Resource, 2011.02.04, website (version 04-Feb-11) NODC Taxonomic Code, database (version 8.0) CHECK-LIST AREA" (AOU Check-list, 7th edition, updated with Supplements 42-46), maintained at Ĭomisión Nacional para el Conocimiento y Uso de la Biodiversidad, database (version undefined) P.W.R.C.ĪOU Check-List (07-2005), website (version Jul-2005)Īmerican Ornithologists' Union's "LIST OF THE 2,037 BIRD SPECIES (WITH SCIENTIFIC AND ENGLISH NAMES) KNOWN FROM THE A.O.U. PO Box 1999 Walla Walla, Washington 99362-0999Ĭhief, Bird Section, U.S.G.S. (Download Help) Campylorhynchus brunneicapillusĬampylorhynchus brunneicapillus (Lafresnaye, 1835) – Cactus WrenĬampylorhynchus brunneicapillus affinis Xantus de Vesey, 1860Ĭampylorhynchus brunneicapillus brunneicapillus (Lafresnaye, 1835)Ĭampylorhynchus brunneicapillus bryanti (Anthony, 1894)Ĭampylorhynchus brunneicapillus couesi Sharpe, 1881Ĭampylorhynchus brunneicapillus guttatus (Gould, 1837)Ĭampylorhynchus brunneicapillus purus (van Rossem, 1930)Ĭampylorhynchus brunneicapillus sandiegensis Rea, 1986Ĭampylorhynchus brunneicapillus seri (van Rossem, 1932) ITIS - Report: Campylorhynchus brunneicapillus Integrated Taxonomic Information System - ReportĬampylorhynchus brunneicapillus (Lafresnaye, 1835) ![]()
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