The Census of the Pigeon Population (Columba livia f. domestica) that Flew Over the Motolské Valley and the Census of this Species

From November 2007 to February 2009 we censused feral Domestic Pigeons {Columba livia f. domestica) by means of the linear transect method and the observation method in Prague. We dealt with the ones that flew over the Motolské valley or stayed in the observed territories during the census - the Motolské valley, the Arbesovo square and the Kinských square. The purpose of this work was to learn the number of birds in these populations and hereby contribute to finding the number of the feral pigeons in the whole capital city of Prague. At the same time we investigated relationships between the number of pigeons and abiotic factors (the temperature of the air, the weather), the part of the day, the season of the year and the harvest season. The number of pigeons which were flying through the Motolské valley were on the average of 960 birds / one census (the detected maximum was 6 555), in the Motolské valley were present 60 pigeons / one census on the average (the detected maximum was 192), and in the squares were 50 birds /one census on the average (the detected maximum was 347). We have not found any relationships between the number of pigeons which were flying through the Motolské valley, and abiotic factors, the part of the day, the season of the year or the harvest season. On the other hand we have found..