Your bunnies are exactly the same size as the ones around here right now. No bunny would be insane enough to build a nest in Coco's yard though. Too small and fenced in with no escape. That does not stop the squirrels from tormenting her, because they can climb trees and scurry away on top of the fences.
Patriotic bunny poster.
Don't build a bunny nest in a Doberman's yard. She finds them all every day.