Loud calls some of the birds produce also has not helped them win over the hearts of local residents.

In several cities authorities are trying to scare the sky invaders away by playing audio clips of hunting birds of prey with moderate success.

Scientists have explained that the annoying guests have cut short their migration because they are enjoying an unusually warm winter and plentiful food in Ukraine.

“The birds are simply too lazy to fly on, and they won’t leave until they eat all the fruits and berries,” commented head of a nature preservation society in Sevastopol, Valentin Shestak. “Why would they if it’s warm in Crimea?”