Zvuky Prahy / Sounds of Prague

Why redstart enjoys the neighborhood of human dwellings is a mystery. He/she selects strange locations where he/she expects it will be fun to build a nest and to bring up young ones. This nest is next to the air shaft near the window from the toilet to the third floor of Smíchov apartment building. Parents are bringing spiders and flies, which are due to drought rather rare this year. There are as well less swallows, martins and swifts this years in Prague. Or I am wrong?