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Researches regarding the influence of the weather on the flight of the white storks (Ciconia ciconia) in the spring migration across the Doamnei River hydrographical basin (Argeş County, Romania) (II). Other considerations about the migration over the area.


Journal: Analele Universitatii din Oradea, Fascicula Biologie
ISSN 1224-5119

Volume: TOM XVIII;
Issue: 2;
Start page: 146;
Date: 2011;
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Keywords: white stork (Ciconia ciconia) | migration | Doamnei River hydrographical basin | Romania

In this last part of the series of articles concerning the migration of the white storks (Ciconia ciconia) in the Doamnei River hydrographical basin, the authors make some considerations regarding the overflown areas and habitats, the aerial activity dependingon the lapse of time and the intra- and inter-specific bonds. The most individuals were observed in the hilly area, flying principally over the settlements and forests. April was the most intense month regarding the migration, the maximum of the aerial activity being between 16:00 and 17:00 for the observations per hour and between 17:00 and 18:00 for the observed individuals per hour. The birds avoided to fly on bad weather conditions and they preferred to use the soaring and gliding flights. Usually, they did not emit any sound.Rarely, the storks were temporarily accompanied in flight by other birds (Pernis apivorus, Accipiter nisus and Falco tinnunculus).
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