U.S. Fish & Wildlife ServiceThis map depicts latitude line boundaries that assist Woodcock Singing Ground Survey (SGS) participants in determining which survey window their route falls within. The survey window determines when the route can be run on an annual basis. More information on the Woodcock SGS can be found at this link: https://migbirdapps.fws.gov/mbdc/databases/awsgs/aboutwcsgs.htmArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/77185dae6fb046acb86287dd930e41c6_0engU.S. Fish and Wildlife Service Open DataPublicWoodcock Singing Ground Survey Latitude Lines [United States]Web servicesUnited StatesLast Modified: 2025-01-31