Situació del mussol banyut Asio otus a l'illa de Formentera

Situation of the Northern Long-eared Owl Asio otus in Formentera. This project describes the observations and analysis of six nests of Northern Long-eared Owl in Formentera Island. These observations took place specifically during 1999 and more generically during the 90s. We show the results of breeding (dates, number of eggs and number of flying chicks) and we register the number of nesting pairs in the island. We also analyse the ringed chicks during the last ten years and the pellets in the roosting area and in the nest