I y II censo de ardeidos invernantes en dormidero en Baleares

I and II Census of winter roosting Ardeidae in the Balearic Islands. Sincronized counts were conducted ofArdeidae entering roosts in Mallorca, Menorca and Ibiza during the winters of 2007 (Census I) and 2008 (Census II). There were large fluctuations between years for the cattle egret Bubulcus ibis in Menorca and Mallorca (with increases of 62.5% and 26.2% respectively) and a tendency towards stability for the other species censused. The roosts chosen were mainly low perches over wetland or dry areas where the birds roosted higher up in pines