Overall apparent nest success was positively influenced by precipitation with Was calculated from July 1 of the prior year through June 30 of the breeding season Influence of precipitation on breeding success, bio-year precipitation (“precipitation”) Between 46 and 74 Cactus Wren nests were monitoredĮach year, which totaled 295 monitored nests from 2015 to 2019. All territories were occupied by pairs except two territories Per year in the Otay population and 14–18 territories in the San Diego populationįrom 2015 through 2019. Nest monitoring occurred at 10–13 territories The Otay population consisted of two sites within the Otay genetic cluster,Īnd the San Diego population consisted of two sites within the Sweetwater/EncantoĪnd Lake Jennings genetic clusters. We monitored nesting activities for two populations of Cactus Wrens in southern Sanĭiego County. Number of Cactus Wren territories increased from 2015 through 2018, and then decreased The Otay and Sweetwater/Encanto clusters but not in the Lake Jennings cluster. With a lower proportion of plots occupied in the Otay cluster than in the Lake JenningsĪnd Sweetwater/Encanto clusters in all years. We found differences in the proportion of plots occupied in the genetic clusters, A total ofģ83 plots were surveyed across 3 genetic clusters (Otay, Lake Jennings, and Sweetwater/Encanto).įrom 2015 to 2019, 317 plots were surveyed 8 times (twice per year in 2015, 2017–19).Īdditional plots were added in later years as wrens were discovered in new locations. Surveys and monitoring for the coastal Cactus Wren ( Campylorhynchus brunneicapillus) were completed in San Diego County between March 2015 and July 2019. Rob Klinger, logistical assistance from Ryan Pottinger, and report review by Kristine We are grateful for statistical assistance from Shannon Mendia and (Skyline Church), Cindy Dunn (City of San Diego Real Estate Department, Airports Division)Ĭharlie de la Rosa (Safari Park), Brock Ortega (Dudek), Phil Clark, Mary Miner, and Lauren Raduc, Mika Shamada-Cicirelli, James Stowers, Maryanne Vancio, Michael Verderber,Īnd Chris Zirkle (San Diego County Parks and Recreation), Tracie Nelson (Californiaĭepartment of Fish and Wildlife), Jason Forga and Emmanuel Gaviola (San Diego Countyĭepartment of General Services), Jodi Casstillo, Pastor Dan Grant, and Tylene Howarter Joshua Lambdin, Erica Mills, Mary Neiz, Robert Piazza, Jennifer Price, Marc Pumpkinthief, (City of San Diego), Louis Chertkow, David Collins, Roger Covalt, Megan Hamiliton, McGinnis, Betsy Miller, Herman Parker, Kim Roeland, Richard Trisby, and Kim Wehinger Limited Partnership), Jason Allen, John Barone, Viviana Castellon, Andrew Field, Niki (City of Chula Vista), Trish Smith (The Nature Conservancy), Brian Canaris (Otay Project Troy Goodenough and Jeff Sykes (San Diego Gas and Electric Company), Richard A. Water District), Michael Galloway and Kim Smith (California Department of Transportation), (San Diego National Wildlife Refuge), Steve Geitz, Kira Haley, and Debbie Lundy (Helix Plots, including but not limited to: Pete Famolaro (Sweetwater Authority), John Martin Property owners, and other stakeholders who facilitated access to the survey and monitoring Results of fecal analysis and advice on prey analyses. Hall, Scarlett Howell, Jennifer Jacobs, and Michelle Treadwell. Thank the biologists who assisted in data collection for this project: Lisa Allen,Īnnabelle Bernabe, Trevin Braun, PJ Falatek, Collin Farmer, Aaron Gallagher, Katie This research was funded by the San Diego Association of Governments.
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