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Population densities and habitat preference granivorous birds (\kur{Passer domesticus, Passer montanus, Streptopelia decaocto}) in human settlements.
BANDHAUEROVÁ, Jaroslava
The most often mentioned causes of decrease in a number of granivoric synantropic birds are primarily changes in agriculture (liquidation of factory farming, using of pesticides, effective methods of harvest, consequences of intensification of agriculture) and changes in socioeconomical status of population (higher care of public green, decrease in numbers of small poultry farms, modernization of buildings etc.), which results in lack of food and opportunity to nest. Goal of this work is primarily evaluate an influence of the agricultural methohds on numbers of the house sparrow (Passer domesticus), tree sparrow (Passer montanus) and collared dove (Streptopelia decaocto) set a preference of habitats for selected species, addiction of their occurence on presence of small poultry farms and factory farming and compare the results with winter monitoring. Then evaluate preferences of nest habitats for house sparrow (Passer domesticus) and tree sparrow (Passer montanus). Monitoring was made in 48 chosen locations in the Czech Republic (most of those locations in South Bohemia) during the nesting period (February May) in years 2015 2016. The data evaluation was made through computer software Microsoft Excel and R v. 2.8.1 (2008). The research shows that factory farming has essentional influence on occurence of all three selected species and difference in occurence between winter and the nesting period is demonstrable. Also the difference in presence of collared dove and house sparrow is demonstrable near factory farms.
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