Biology of birds in a residential area

Abstract

A number of ethological and ecological indicators of bird biology in the natural landscape of the residential area differ. For example, birds that nest in low trees and bushes in forests and shrubs Streptopelia, Eurasian jay (Garrulus glandarius), True thrush, Chloris, etc.) nest in inaccessible tall trees in the field. Even the Bunting, which nests in the grass in its natural environment, builds a nest on a low bush in a watery field. In some countries, crow species living in the suburbs build their nests in low trees and on rocks in natural areas, while in cities they are known to nest on the roofs of high buildings or in the inaccessible heights of tall trees.

The chronology of breeding birds in the Seliteb region changes. Here the breeding numbers of many bird species increase during the season. We assume that it is because the birds in the residential area have an additional food base. While the field pigeon in the natural biotope (rocky) doesn't breed more than 2 times, breeds 4 times in the residential area. The roof sparrow breeds twice a year in the natural biotope (bushes), and up to 5 times after moving to the field. Streptopelia breeds only once a year in the natural biotope (shrub), and twice a year in the field.

    Birds adopting the residential area show a change in food ration, and in some cases even in the food nature. Grain-eating birds move from wild plant seeds to cultivated plant grains. Eating crab berries and fruits in the natural biotope, birds begin to feed on berries and fruits of cultivated plants in the field.

    Moving from the forest to the city in Western Europe (Berlin), Eurasian jay (Garrulus glandarius) and True thrush destroy the nests of peaceful birds, that is, eat their babies. In London, the food ration of Greyish eagle-owl is peaceful birds, but in the forest is small mammals. Crow and raven prey on small vertebrates and invertebrates in natural landscapes around some cities, while in the city they prefer to feed on fruits and berries of a number of cultivated plants.