BUT before you have babies, you need to have a momma building a nest.
Below is a video of someone else's doe making a lovely nest for her impending babies.
Some rabbits will pull fur days ahead of time. Making their nest, getting it all just so, and then ignore it.
Other rabbits will wait until the very last second, build the nest, have their babies and done.
Still different rabbits will have their babies and then build a nest around them.
Others will build their nest and fuss over it for three or four days before having their young. Pulling a wee bit of fur and then rearranging it, making a nest hollow.
And sadly there are some who simply never build a nest. These bunnies if you get to the babies on time you can save them, but if you don't.. it's mighty hard to.
The MOST frustrating ones are those that make a nest and then when babies come go "OH, I'll just have them on the wire over here and cover them with a touch of straw". Those ones you can't really predict unless they've done it before.
There are variations on the theme in-between all these standards...and it can change from litter to litter.
It's rabbits...you can either cry over them or shake your head at their antics, and then rejoice with those who do their job well. Those are the does you keep. Those are the does from whom you keep replacement stock.
Have fun with the babies. :)