Most wild animals are too elusive to reveal their secrets.
For every species such as gray squirrels, that go through their life in front of an audience, there are 20 species whose life history is unknown. One way to gain access to the daily life of an animal is through radiotelemetry. By attaching a radio transmitter a researcher can go to where the animal is, or can use the location information to extrapolate the activity of the animal. Traditional radiotransmitters work by broadcasting a signal on a specific frequency. The researcher then uses a system of directional antennas to pinpoint the animal's location.