Southwestern Willow Flycatcher (Empidonax traillii extimus) surveys and nest monitoring in San Diego County, California, 2017
Data presented are results of surveys and monitoring in 2017 for Southwestern Willow Flycatcher (Empidonax traillii extimus) in San Diego County, California. Surveys were conducted at locations along the San Luis Rey, Sweetwater, and Tijuana Rivers, and nest monitoring was performed at three locations along the San Luis Rey River downstream of Lake Henshaw (Cleveland National Forest, Rey River Ranch, Vista Irrigation District). 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 was recorded. At the nest monitoring locations, adult flycatchers (when possible) were captured in mist nets, using song playbacks to attract birds to nets, and color banded with individually unique color combinations to provide data on survival within and between years. During banding, data were collected on age, sex, weight, and reproductive status. The goal of nest monitoring was to collect data on annual productivity. Monitored territories were visited 1-2 times weekly to determine nest success and band the nestlings at 6-8 days of age.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "U.S. Geological Survey, Western Ecological Research Center",
"@type": "vcard:Contact",
"hasEmail": "mailto:gs-b-werc_data_management@usgs.gov"
}
|
| description | Data presented are results of surveys and monitoring in 2017 for Southwestern Willow Flycatcher (Empidonax traillii extimus) in San Diego County, California. Surveys were conducted at locations along the San Luis Rey, Sweetwater, and Tijuana Rivers, and nest monitoring was performed at three locations along the San Luis Rey River downstream of Lake Henshaw (Cleveland National Forest, Rey River Ranch, Vista Irrigation District). 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 was recorded. At the nest monitoring locations, adult flycatchers (when possible) were captured in mist nets, using song playbacks to attract birds to nets, and color banded with individually unique color combinations to provide data on survival within and between years. During banding, data were collected on age, sex, weight, and reproductive status. The goal of nest monitoring was to collect data on annual productivity. Monitored territories were visited 1-2 times weekly to determine nest success and band the nestlings at 6-8 days of age. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Digital Data",
"format": "XML",
"accessURL": "https://doi.org/10.5066/P96VC5Y4",
"mediaType": "application/http",
"description": "Landing page for access to the data"
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{
"@type": "dcat:Distribution",
"title": "Original Metadata",
"format": "XML",
"mediaType": "text/xml",
"description": "The metadata original format",
"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.631aeaf7d34e71c6d679cb26.xml"
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|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_631aeaf7d34e71c6d679cb26 |
| keyword |
[
"San Diego",
"San Luis Rey River",
"USGS:631aeaf7d34e71c6d679cb26",
"biota",
"birds",
"endangered species",
"habitats",
"population and community ecology",
"riparian habitats",
"survey",
"survival"
]
|
| modified | 2025-12-12T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -117.1014, 32.5459, -116.7646, 33.2705 |
| theme |
[
"Geospatial"
]
|
| title | Southwestern Willow Flycatcher (Empidonax traillii extimus) surveys and nest monitoring in San Diego County, California, 2017 |
