Fig. 3
From: Using dead-reckoning to track movements and map burrows of fossorial species
Identification of burrow entry by prairie dogs: tri-axial acceleration data, smoothed VeDBA, and smoothed pitch angle for three example prairie dogs descending into their burrows. Each individual is represented by a unique letter. The gray arrows indicate instances, where both conditions of the dual criteria are met, and “entering the tunnel” is identified within the acceleration trace. Behaviour was categorized using video footage after a tunnel run or camera trap footage and each panel (A, B, C) represents a different instance of this behaviour