Bat
Microbats make use of magnetoreception, in that they have a high sensitivity to the Earth's magnetic field, as birds do. Microbats use a polarity-based compass, meaning that they differentiate north from south, unlike birds, which use the strength of the magnetic field to differentiate latitudes, which may be used in long-distance travel. The mechanism is unknown but may involve magnetite particles.
Reverse migration (birds)
This is a technique used to track animals with a transmitter and receivers. A miniature transmitter is attached to the subject animal and this transmitter emits a very high frequency (30-300 MHz) which can be picked up with one or more receivers. For studying the moment behaviour of birds in a migration hotspot south-west of Sweden called Falsterbo near Falsterbo bird observatory three receivers were used to triangulate and track the birds.
Ringing birds is when a light weight metal band is attach to the foot to not impair movement but stay on the bird with a identification number. This identification number can provide people catching and these birds movement and history with information such as how old they are and where they have been. At the Falsterbo bird observatory these birds are caught with a mist net measured and banded.