Ehh…
https://www.latimes.com/archives/la-xpm-1992-05-10-we-2559-story.html
The Duck Wars : Mating season is a brutal time for the female birds, who often are injured or die. Residents along the canals have created a sanctuary.
This is mating season, and, as the ducks’ human friends will tell you, it’s no Disney movie. These are ducks out of a Far Side cartoon, says one observer: They should have jackets that read “Hell’s Waterfowl.”
The ducks of the Venice canals, most of them crossbred mallards officially known as urban domesticated ducks, engage in mating behavior that is hard on the females in the best of times. A female that wanders near a group of males will be mounted again and again. Females that escape alive drag themselves out of the water stripped of the feathers on their heads and backs. Some lose an eye.
I’m pretty sure that the airspace around Heathrow is controlled, too.