I live in a small city in the US, where it’s grass everywhere. There’s lots of rabbits, but why aren’t there more? They eat grass, and there’s clearly more grass than they can eat at their current population size. There’s no significant predators to speak of, I don’t think. They breed legendarily quickly, there’s even an expression about it. So if food isn’t a constraint, predators aren’t a constraint, what is the constraint? I would think they should just increase population until we don’t have to cut our grass anymore.
In: Biology
There probably are predators. At the very least, there are cats and dogs that aren’t 100% supervised all the time. Maybe they aren’t everywhere, but foxes, coyotes, hawks, and owls are common in many places, even some dense urban areas. Add in non-animal hazards, like cars, poison traps meant for other rodents, lawnmowers….
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