The mission of Los Angeles Audubon is to promote the enjoyment and protection of birds and other wildlife through recreation, education, conservation and restoration.
This is the weekly update of the Los Angeles Audubon Rare Bird Alert.
Terns and Crows: Lessons in endangered shorebird management from Venice Beach
Presenter: Erich Eberts
WHERE: Baldwin Hills Scenic Overlook
WHEN: April 12, 2017
TIME: 7-9 p.m.
American Crows (Corvus brachyrhynchos) play an important role in the reproductive failure of the Venice Beach colony of endangered Southern California Least Terns (Sternula antillarum browni). Over the last five years, numerous non-lethal predator control systems (including chemical emetic and mild electrical shock conditioning) have been developed and implemented at the Venice Beach colony with the goal of deterring the crows from eating tern eggs and chicks. Initially, breeding success was observed, however, due to extensive peanut caching in the un-groomed nesting site (associated with local wildlife feeding), crows were encouraged to persistently search the nesting site, neutralizing the negative conditioning of the shocking system. In analyzing the effectiveness of these non-lethal predator control systems, we find it is important to recognize the significant role anthropogenic factors have in affecting the ecology, behavior, and dispersion of various species in urban ecosystems. This talk will therefore discuss crow and least tern interactions at Venice Beach, the effectiveness of non-lethal predator control systems, and the role people can play in contributing to urban wildlife conservation and management.
About Erich Eberts
I graduated from Loyola Marymount University in December 2015, where I studied biology with an concentration in ecology. As an undergraduate, my primary research projects included Photosynthetic Characterization of Invasive Plant Species in Los Angeles County, Predator (American Crow) Electrical Shock Aversion System for Endangered California Least Terns, and Urban Hummingbird Biodiversity and Behavior. After graduation, I spent three months in Ecuador working on hummingbird research, and backpacking in the Peruvian Andes. Upon my return, I was excited to continue my research in urban wildlife biology, and especially in crow cognition and hummingbird behavior and physiology, at the LMU Center for Urban Resilience, where I spent three years as an undergraduate researcher. As the CURes Research Fellow, I primarily guide and mentor 20 undergraduate researchers on their urban wildlife and social science research projects. I plan to pursue a Ph.D. in Ecology to further develop my interests and experience in avian physiological and behavioral ecology, and to pursue a career in field biology through academia.
Ballona Wetlands Wildlife, Photo by Leslie Davidson
Saturday, April 1, from 9 a.m. to noon, Los Angeles Audubon Society will host their 1st Saturday of the month “Open Wetlands” event at the Ballona Salt Marsh. Binoculars will be available to borrow, and volunteers will help visitors view aquatic invertebrates through microscopes, learn about the unique ecosystems found at Ballona, and view birds through powerful spotting scopes along Ballona Creek. The buckwheat is in bloom and lots of butterflies to see. Please drop-in!
Enter through the gate located in the northeast corner of the parking lot behind Alkawater/Gordon’s Market, in the 300 block of Culver Blvd. in Playa del Rey.
No baby strollers please.
Print and bring your own copy of "Field List of the Birds of Los Angeles County (mainland and off shore waters)"
SEE ALSO: "A Wet, Wet, Wetland", Article from the Western Tanager, March-April 2017