The European roller is a middle sized migratory bird,
the size of a Eurasian jay at 29–32 cm in length with a 52–58 cm wingspan. It is mainly blue with an orange-brown back.
The European roller is striking in its strong direct flight, with the brilliant blue contrasting with black flight feathers. Rollers prefer mosaical habitats, with a few trees, shrubs and the most important factor is grazing animals which provide insect food-base, and also a nesting hole in which it can nest successfully. In Vojvodina, the most important factor proved to be the lack of good nest hole which were made the Green woodpecker in solitary trees, tree-lines of farms.
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By providing artificial nestboxes for the Rollers, we give them a safe nesting place and also mark them with ornithological rings with unique codes to track their migration. They arrive in Serbia in late April, early May and if the weather is warm, they will start the breeding process with striking aerial display, hence the English name of the bird: Roller.
After the display, the male bring food-gifts for the female in form of insects. The chicks hatch after approximately 28 days of incubating and stay in the nestbox for one more month.
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