Alamagan, Commonwealth of the Northern Mariana Islands, Nightingale Reed-warbler occupancy data, 2010

Occupancy data were collected during the 2010 surveys of Alamagan, Commonwealth of the Northern Mariana Islands (CNMI). Data were collected at points along transects where trained observers listened for Reed-warblers during the 3-minute survey period (30 seconds of playback followed by 2 minutes and 30 seconds of observation). Observers recorded the horizontal distances of any Reed-warblers heard/and or seen, direction of the bird from the observer, and time of detection. The data set also includes covariates that may influence the occupancy of birds.