Fig. 4

Example data of static and dynamic acceleration data for both tag types, down-sampled to 20 Hz resolution. a Static and b dynamic acceleration in all three axes (x-blue, y-green, z-red) of a goose with backpack tag with an overlaid bar of observed behaviour inserted (black rest, blue walk, green feed, red preen, pink vigilance). c, d Same as a, b, but for a goose with neckband tag. Note the differences in scale and differentiability of behaviours by tag type. The accelerometer was fitted into the tags so that for the backpacks x is the reverse of surge, y is the sway and z is the heave. For the neckband on a raised goose neck that means x is the reverse of heave and y and z indicate surge and sway depending on how the tag is turned