Alter several years tracking migratory birds in the area of the Straits of Gibraltar, using radio-tracking techniques, we have found that the frequencies of the transmitters are after doubled, being carried by different birds. This can crate great confusion and generate mistaken data.
With the aim of facilitating information and collaborating with different researchers, we have set up the European Bank of Frequencies on our web, so that the researchers who use transmitters to track and locate fauna may see if the frequency they are trying to acquire is already being used by another researcher; which species it is to be found on and the approximate expiry date of the transmitter.
Undoubtedly, this tool is also extremely useful for the manufacturers of the transmitters, since, through this European Bank of frequencies on our web, they can access the data of whether or not the broadcasting frequency of the apparatus they are about to manufacture is already in use.
The data base also offers the possibility to authorize the Colectivo Ornitológico Cigüeña Negra to try to locate migratory species in the area of The Straits of Gibraltar. In the cases where birds are located, their location is always communicated to the researchers, along with other parameters related to radio-location: the weather on the day; if the bird was sighted or not; the bird´s condition; relation to other birds, as well as the size of the groups and so on. The website of the European Bank of Frequencies (BEF Banco europeo de frecuencias) is the following: