Summary of 2010 Bird Surveys in Grant-Kohrs Ranch National Park: Stuart and Taylor Field Sites
Larson M. 2011. Summary of 2010 Bird Surveys in Grant-Kohrs Ranch National Park: Stuart and Taylor Field Sites
This report describes the first year of point-count surveys established in hayfields at Grant-Kohrs Ranch National Historic Site (GRKO). This study aims to provide baseline species abundance data during the breeding season, to better inform Best Management Practices for hayfields at GRKO. Untimely mowing of hayfields is often cited for negatively affecting breeding success of grassland birds. A total of 496 birds were detected, representing 47 species during three point-counts in 2010. The most abundant species were Savannah Sparrows and Bobolink. No nests were located during casual observations, but juvenile birds were observed during the final visit to GRKO on July 9th. Hay harvest began 15th July. Recommendations follow multiple sources for continuation of late-July hay harvest of GRKO fields. Future surveys and nest monitoring will bolster understanding of species use and breeding chronology in GRKO hayfields.