Landbird monitoring 2019 annual report: Channel Islands National Park
Hall LS, Larramendy P, Lee L, Shaskey L. 2022. Landbird monitoring 2019 annual report: Channel Islands National Park. Natural Resource Report. NPS/MEDN/NRR—2022/2465. National Park Service. Fort Collins, Colorado. https://doi.org/10.36967/2293616
The National Park Service (NPS) began monitoring landbirds at Channel Islands National Park in 1993 as part of its long-term inventory and monitoring program. The park’s landbird monitoring later became part of the NPS Inventory and Monitoring Division’s Mediterranean Coast Network longterm monitoring programs. Consequently, landbird monitoring has been conducted during every breeding season since 1993. In this report, we summarize data collected during the 2019 breeding season. Landbird monitoring was conducted between 1 March and 27 June 2019. Using distance-based sampling methods in a standardized protocol, birds were counted on 332 of 348 permanent point count stations across the Channel Islands monitored for landbirds. These surveys were conducted at 29 of 33 points on Santa Barbara Island, 8 of 8 on East nacapa Island, 112 of 112 on Santa Cruz Island, 40 of 40 on San Miguel Island, and 145 of 145 on Santa Rosa Island. Sixty-one bird species were counted from points and transects across all the islands in 2019. Thirty-six of these species breed in Channel Islands National Park. Parkwide, the 10 most detected breeding landbirds in 2019 were, in descending order: Spotted Towhee, Song Sparrow, Orange-crowned Warbler, Bewick’s Wren, Western Meadowlark, Horned Lark, House Finch, Pacific-slope Flycatcher, Island Scrub-Jay, and Common Raven (scientific names in Table 2). Across all five islands, five transient or visiting bird species were newly counted in 2019, for a total of 63 such species counted since NPS monitoring began on the islands. Notable findings from 2019 include the first documentation of a Short-eared Owl on San Miguel Island, and Common Raven was a new transient species counted on SBI.
- Type
- Published Report
- Authors
- Hall, Linnea; Larramendy, Peter; Lee, Lena; Shaskey, Laura
- Date of Issue
- 2022-09
- Publisher
- National Park Service
- DOI
- 10.36967/2293616
- Units
- CHIS , MEDN , NRSS
- Keywords
- bird, distance sampling, islands, Landbird Monitor
- Subjects
- Ecological Framework: Biological Integrity | Focal Species or Communities | Birds