Rabbits are really good at surviving. They adapt to a variety of habitats. But what rabbits do really, really well in is breeding. They don't have to think about who to mate with, whether the male will be a good provider, whether his coat is sleek or ragged, whether he can run faster than a fox or wiggle his ears. All a male rabbit has to do to mate is be there when the female is in heat.
Rabbits have estrus.
The only noise I've ever heard a rabbit make was a squeal when a fox grabbed it. They touch, certainly. And they sniff each other. A female that urinates when she is in heat is leaving a scent which a male rabbit will react to. Or when two males are going for the same female.