Assessing Willow Flycatcher Population Size and Distribution to Inform Meadow Restoration Priorities in the Sierra Nevada and Southern Cascades

Keywords
Resource Type: 
Briefly
This report brings together recent survey results from state and federal agencies and other groups, and provide an updated range map and population estimate for Willow Flycatcher in the Sierra Nevada.
Contributors
Primary Contact: 
Content / Description / Abstract

Date:  September 25, 2014

Citation

Loffland, H. L., R. B. Siegel, R. D. Burnett, B. R. Campos, T. Mark, C. Stermer 2014. Assessing Willow Flycatcher population size and distribution to inform meadow restoration in the Sierra Nevada and Southern Cascades. The Institute for Bird Populations, Point Reyes Station, California.

Executive Summary

Many reports and peer reviewed papers have documented significant declines in Willow Flycatchers across the greater Sierra Nevada within the last 30 years and more than ten years have passed since state and federal survey efforts have been collated to provide a current picture of the distribution and population size of Willow Flycatcher in the Sierra Nevada and southern Cascades. We partnered with the US Forest Service (USFS) and the California Department of Fish and Wildlife (CDFW) to bring together recent survey results from state and federal agencies and other groups, and provide an updated range map and population estimate for Willow Flycatcher in the region. We estimate 93 meadow and riparian systems may currently support Willow Flycatchers. Most extirpations have occurred south of Lake Tahoe and we estimate a 50% decline in the number of breeding sites in the last 30 years. Important management recommendations include restoring currently occupied meadows and large meadows within a 12 km dispersal distance from occupied meadows, and creating an inter-agency data repository to allow for easier and more accurate tracking of trends for Sierra Nevada Willow Flycatcher populations.

Downloads
AttachmentSize
PDF icon Download Report (.pdf)4.19 MB