Pacific Southwest

Title: Use of Non-Riparian Habitats by Least Bell's Vireos

Author: Kus, Barbara E.; Miner, Karen L.

Date: 1989

Source: In: Abell, Dana L., Technical Coordinator. 1989. Proceedings of the California Riparian Systems Conference: protection, management, and restoration for the 1990s; 1988 September 22-24; Davis, CA. Gen. Tech. Rep. PSW-GTR-110. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; p. 299-304

Station ID: GTR-PSW-110

Description: The least Bell's vireo (Vireo bellii pusillus) is an endangered songbird inhabiting riparian woodlands in southern California. Although the species requires riparian habitats for nesting, vireos also occur in upland habitats adjacent to breeding areas. Vireos breeding at the Sweetwater River in San Diego County during 1986 and 1987 were observed using non-riparian areas for foraging and nesting. The use of non-riparian habitats, primarily areas of coastal sage scrub and chaparral vegetation, varied over the nesting cycle, and was related to territory location and habitat composition. These observations suggest that planning boundaries intended to protect resources essential for breeding vireos should include upland areas bordering riparian habitats.

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Citation

Kus, Barbara E.; Miner, Karen L.  1989.  Use of Non-Riparian Habitats by Least Bell's Vireos.   In: Abell, Dana L., Technical Coordinator. 1989. Proceedings of the California Riparian Systems Conference: protection, management, and restoration for the 1990s; 1988 September 22-24; Davis, CA. Gen. Tech. Rep. PSW-GTR-110. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; p. 299-304.