“There are wild parrots in Leverkusen. Step off the train in the German city and walk into the park that leads to the football stadium. They’re there. A dozen, maybe two. They sit in the branches and then flutter away when they decide people are getting too close. It’s a local phenomenon. Nobody seems to know quite where they came from. One theory has it that a few rose-ringed parakeets were released many years ago and, from there, the population boomed. ….”
The Athletic (Video)