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  4. Southwestern Willow Flycatcher (Empidonax traillii extimus) Surveys and Nest Monitoring in San Diego County, California (ver. 3.0, January 2024)
  5. Southwestern Willow Flycatcher (Empidonax traillii extimus) Surveys in San Diego County, California, 2023

Southwestern Willow Flycatcher (Empidonax traillii extimus) Surveys in San Diego County, California, 2023

Dates

Start Date
2023-05-24
End Date
2023-07-28

Citation

Howell, S.L., and Kus, B.E., 2022, Southwestern willow flycatcher (Empidonax traillii extimus) surveys and nest monitoring in San Diego County, California (ver. 3.0, January 2024): U.S. Geological Survey data release, https://doi.org/10.5066/P96VC5Y4.

Summary

Data presented are results of surveys in 2023 for Southwestern Willow Flycatcher (Empidonax traillii extimus) in San Diego County, California. Surveys were conducted at the 2016-19 nest monitoring locations (Cleveland National Forest, Rey River Ranch, and Vista Irrigation District) and at Lake Henshaw along the Upper San Luis Rey River. Surveys were conducted along multiple sections of the river where permission to access properties could be obtained. Locations were surveyed using a standardized protocol three to four times between 15 May and 31 July. The number, age (adult or juvenile), sex, banding status (color banded or not, and if so, color combination), and breeding status (paired, undetermined, or transient) of all willow flycatchers [...]

Contacts

Point of Contact :
U.S. Geological Survey, Western Ecological Research Center
Originator :
Scarlett L Howell, Barbara E Kus
Metadata Contact :
Barbara E Kus
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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Southwestern Willow Flycatcher surveys in San Diego County, California, 2023.xml
Original FGDC Metadata
View 		19.27 KB application/fgdc+xml
2023SurveyArea.csv 647 Bytes text/csv
Abbreviations_AllYears.csv 937 Bytes text/csv
DataDictionary_AllYears.csv 15.99 KB text/csv
WIFLIndividualSurvey2023.csv 5.21 KB text/csv
WIFLLocations2023.csv 9.33 KB text/csv
WIFLObservers_AllYears.csv 499 Bytes text/csv
WIFLSurveyResults2023.csv 492 Bytes text/csv
Shapefile: SWFL_SurveyAreas_2023.zip
SWFL_SurveyAreas_2023.sbn 188 Bytes
SWFL_SurveyAreas_2023.sbx 132 Bytes
SWFL_SurveyAreas_2023.shp 3.64 KB
SWFL_SurveyAreas_2023.shx 132 Bytes
SWFL_SurveyAreas_2023.cpg 5 Bytes
SWFL_SurveyAreas_2023.dbf 574 Bytes
SWFL_SurveyAreas_2023.prj 145 Bytes

Purpose

The purpose of this study was to determine the size and distribution of Southwestern Willow Flycatcher populations within San Diego County, and to collect demographic data to better understand population trends and conservation needs of flycatchers. This study was part of the San Diego Management and Monitoring Program’s (SDMMP) regional monitoring and management of sensitive species and habitats on conserved lands in western San Diego County. The SDMMP coordinates science-based biological management and monitoring of lands in San Diego that have been conserved through various conservation planning and mitigation efforts. The results of this study will be used by managers to develop specific management goals and objectives to ensure the species’ continued existence in San Diego County.

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