Female rabbit most of the time have their babbies on the 30th day. Most breeder say put the nestbox in the 27th day.
I'm sure this has something to do with building a nest. My female rabbit used to pull most of her fur of her back to make a nest when she had phantom pregnancies. It may be that this is what your rabbit is doing.
Female rabbits may keep hay in their mouth as part of nesting behavior or to transport it to a comfortable spot for building a nest. This behavior is common in pregnant rabbits or those in a nesting phase preparing for birth. It can also be a way for rabbits to carry and store food for later.
underground burrows
The lump you are referring to is probably her dewlap. A dewlap is loose skin that often develops on the neck of the female rabbit. They are found mainly on female rabbits in certain breeds, the males are also allowed a small one. Its purpose is to give another area for the doe to pull fur from when she is making her nest for her kits.
The female wren does.
A doe (female rabbit) will pluck its fur before giving birth because it is preparing a nest for her kits (baby rabbits). She will use the fur to keep the kits warm when she is not in the nest.
Female rabbits do not rip their fur. When they are preparing to have babies there bodies release a hormone that allows the fur to come out. In the wild, baby rabbits are born underground where it is cold and damp. They pull their fur to keep the babies warm.
That is a very big sign that you doe (female ) is pregnant she Will probably have her babies in the next week
Female bunnies may bite due to fear or discomfort, feeling threatened, or trying to protect their territory or young. It's important to approach rabbits gently and give them space to avoid triggering defensive behavior. Regular handling and socialization can help reduce biting tendencies in rabbits.
Dwarf female rabbits
it is the male and female that make the nest. if there is only a male then it may be harder to build a bigger nest.
No defenitely female birds will built the nest