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Cocos Island, Guam Brown Treesnake Rapid Response Visual Survey and Capture Data,10/2020 - 05/2023

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2023-10-24T00:00:00Z
These data were generated during a USGS Rapid Response for brown treesnakes (Boiga irregularis) on Cocos Island Guam (Islan Dåno’, Guåhan in CHamoru). They represent data collected during nocturnal visual surveys for brown treesnakes and data associated with captured snakes, effort during visual surveys as time and distance, as well as lizards, birds, and bats encountered during transect surveys. These data represent all data collected from the onset of the rapid response in October 2020 through a typhoon that caused major site disturbance in May 2023. Data represent only USGS efforts during the specified time period. Additional data may be available for other organizations operating during the specified time period.

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