I’m going to add some rolled oats and some kitten formula to their water.
Please make sure they have plain water available too!
If they're already drinking some water, then they need water in addition to milk.
At 4 weeks, they will probably be fine. It's not rare for people raising meat rabbits to wean the babies right at 4 weeks. They usually do fine.
I have a rabbit with a litter right now with 6 kits that are just over 4 weeks old
A rabbit's pregnancy is usually 31 days, which is a little over 4 weeks. I think she just got re-bred promptly after giving birth to that first litter.
Is there a buck who shares her cage? (Not a good idea, BTW)
Is there a buck she sometimes gets to visit/play with?
Is there a buck she could have possibly gotten together with for a single minute?
(Assume that a parent, sibling, child, friend, etc could have opened a cage briefly, even if you did not.)
Two weeks ago an old far friend told us that a rabbit can have old sperm inside her for up to a month and become pregnant this way. I blew him off. Could this be what happened?? I went up to the house and got onto my rabbit forum for help. The one person sa one thing, one another...but then, the known ‘expert’. said that it’s actually a second kindle from the same pregnancy.
I'm an expert too! (Or at least, I'll claim to be ) I say she must have just gotten re-bred, with no funny sperm-storing business. Chickens store sperm, rabbits do not.