Grup d'Anellament de Calldetenes-Osona

The catalan aquatic bird census it's included in the International Water Bird Census (IWC), that anually quantify the wintering aquatic birds amount in more than 80 countries in Europe, Asia and Northe Africa.

The obtained data allows to know the conservation status of these species in global scale. In local scale it allows us to avaluate the catalan wintering areas capacity.

We participate in some tracks of Ter river and some Osona's zone.

You can see more information of this project:
http://censhivernal.blogspot.com
http://www.mitmanlleu.org/?c=110