Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys

QMG 2014 Detections Distance Double-observerContains information about each animal group either observer from a helicopter in flight: Species code, 'capture' history, count, whether group was flying or not, distance bin of detection by front observer, distance bin of detection by back observeranalyze_waterfowl_mrds_FINALR-code for analyzing detections of Arctic waterfowl using double-observer sampling during helicopter surveys