Type: report
Article abstract: We surveyed for Southwestern Willow Flycatchers (Empidonax traillii extimus; flycatcher) along the upper San Luis Rey River near Lake Henshaw in Santa Ysabel, California, in 2023. Surveys were completed at four locations: three downstream from Lake Henshaw, where surveys previously occurred from 2015 to 2022 (Rey River Ranch [RRR], Cleveland National Forest [CNF], Vista Irrigation District [VID]), and one at VID Lake Henshaw (VLH) that has been surveyed annually since 2018.
Number of pages: 22
Authors: Howell, Scarlett L.; Kus, Barbara;
Year: 2023
Purpose: The goal of the 2023 effort was to assess the population status, banding status, breeding status, and habitat attributes of the flycatcher population along the upper San Luis Rey River, in an area downstream from Lake Henshaw, where demographic monitoring occurred from 2015 to 2019 (Howell and others, 2022; Howell and Kus, 2022b), and the habitat surrounding Lake Henshaw. This report is the annual update to surveys that have been completed since 2015 (Howell and Kus, 2021, 2022a, b, 2023). The data contained in this report can be found in the associated data release (Howell and Kus, 2022b)
Keywords: bird surveys; endangered species;
Species: Southwestern willow flycatcher
Vegetation communities: riparian forest & scrub
Projects: