Poland has lots of mosquitoes in summer, Poles don't like being bitten by mosquitoes, swifts eat mosquitoes.
Therefore: https://www.whitemad.pl/budki-dla-j...arszawie-te-ptaki-to-najwiekszy-wrog-komarow/
When renovating the communal blocks of flats in Warsaw, they placed a lot of swift boxes to draw the birds there, to eat the insects.
Therefore: https://www.whitemad.pl/budki-dla-j...arszawie-te-ptaki-to-najwiekszy-wrog-komarow/
When renovating the communal blocks of flats in Warsaw, they placed a lot of swift boxes to draw the birds there, to eat the insects.