La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Telemetric studies on the daily activities of the magpie (Pica pica) in winter
Auteurs :	Stefan Bosch, Auteur ; Peter Havelka, Auteur
Type de document :	Article
Dans :	Vogelwarte (39(3) Feb., 1998)
Article en page(s) :	171-175
Langues:	Allemand
Résumé :	By means of radio-telemetry we tracked the daily activities of two magpies of the same roosting community in winter time. In December and January which were characterized by constant freezing and by a closed snow cover both birds used a grove and a closed sloe hedge as roosting places. During daytime the magpies did not go farther than 1300 and 1500 meters from their roosting places and did not leave an activity area of about 0.75 square kilometers. The daily flight distance ranged between 4100 and 4300 meters when the weather was mild and between 3200 and 3400 meters when it was freezing. Disturbances at the roosting place caused soaring with a flight distance of up to 600 meters. Daily visited food sources were litter cans, compost piles, a chaff area and a feeding place. The ideal habitat for this magpie-roosting community seems to be the edge of the urban area and the neighbouring diversified open landscape. It offers regularly usable food sources, even available during periods of freezing and snow cover.

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