There are millions of robins in this country - 4.4 million to be more precise.
Robins go to great lengths to keep other robins off their patch.
It's a constant battle. You'll be able to hear them singing madly at dawn, as territory struggles take place. When scrapping over turf, male robins stick their red breasts out and sway from side to side. They get so het up that they will even attack a bundle of red feathers. If things get really out of hand, robins will attack their rivals and may even kill them.