viernes, febrero 03, 2012

Wintering Red kites in Switzerland, January 2012

Resultados del censo de milano real en Suiza.
Saludos
Juan


De: Adrian Aebischer [mailto:adaebischer@pwnet.ch]
Enviado el: domingo, 29 de enero de 2012 13:19
Asunto: Wintering Red kites in Switzerland, January 2012

Dear all,

Red kite census in Switzerland on January 7th and 8th 2012
76 volunteers controlled all 56 known Red kite roosts in Switzerland. All in all, 1815 Red kites were counted at 39 occupied sites. One third of all sites comprised more than 60 individuals with a maximum of 196 birds at one site. 14% of all kites were juveniles (born in 2011). The roosts were situated at altitudes between 350 m and 1000 m above sea level. The birds are fed in 70% of all regions at least.
It is the highest ever counted January number in Switzerland. There was only a 7% decrease since end of November 2011 when 1946 kites were counted. Snow cover was almost completely absent below 700 m asl. between the two counts.

Yours,
Adrian


nb: If anyone is intersted in getting the full report on the January 2011 census in Switzerland (written in German or French), feel free to contact me.