We used hand-held GPS Receivers, baited minnow traps, visual encounter surveys, air rifles, and Fyke nets, to map and collect American Bullfrogs, Rana catesbeiana, at wetland sites over the ca. 455 acres Resighini Rancheria, in Klamath, Del Norte County, California from 2018 through 2022. We were able to identify seven (N=7) distinct age-classes from collected samples. We dissected the metamorph, juvenile, sub-adult and adult frogs obtained, in order to record prey item types, and prey sizes, relative to frog size. Prey base diversity was high, and impacts on a wide array of pollinating insects was observed, including: hornets, wasps, bumble bees, dragonflies, gnats, crane flies, beetles and honey bees. We correlated our diet data with a prey item dataset from a 2004 study site in Merced County, and found additional evidence for the impacts of bullfrog predation on pollinating insects. A truncated discussion of how our data support previous studies on the predatory impacts of non-native, invasive bullfrogs at wetland eco-systems, is presented.

Bradford Norman works as the Wetlands Program Coordinator for the Resighini Rancheria's Natural Resources Department and has since 2018 to the present. He studied pre-Medicine, Herpetology and Languages at the University of Puget Sound, Tacoma, Washington and has conducted field research on the reptiles and amphibians, fisheries and malacology of the Pacific Northwest for over 30 years while employed by the US Forest Service, the US Fish & Wildlife Service, the Humboldt State University Foundation, the California Department of Fish & Wildlife, and private companies and has published 18 papers in herpetology and ichthyology and authored scores of biological reports. His recent research involves fisheries and amphibian populations and wetland bio-diversity in northern California.