Answer:
I am due to have my first litter of rabbits in the next day or two and can answer this question, I will be weighing them. They will probably be only a few ounces at the most however. I also breed dogs (Whippets - about a medium sized breed) and my pups average between 8-12 oz when they are born, so kits are probably going to be under 3-4 oz I would think. I have New Zealand Rabbits which are a larger breed as well. Will answer when I get weights on the new kits when they arrive.