Resumen de Nova localitat de cria de l'arpella (Circus aeruginosus) a Mallorca
A brief historical summary of the Marsh Harrier in Mallorca is presented. as well as the current trend of the species. The results of a one-year survey carried out on the Marsh Harriers at 1'Albufereta de Pollença (Mallorca) aré also presented. This species was first confirmed as breeding at this site in 1992. In addition, its presence in the winter season is noteworthy
