Fig. 3
From: A system for automatic recording of social behavior in a free-living wild house mouse population
Mice access nest boxes through acrylic tunnels. Each tunnel is equipped with 2 antennas to allow discrimination between an individual entering or leaving a box. Shown here is (with nest box number 2 as an example) the positioning of the 2 antennas, each connected to an AniLoc device, with a mouse passing through the “outer” antenna (upper right), and a green light signal indicating proper functioning of the device (lower left)