Thank you for taking these rabbits in!
The first thing to do is to try and sex them. There are good resources online with pics. Here is one video, from a trusted source;
https://youtu.be/gieHwY0J2A0
Omce youve separated males and females you’ve bought yourselves a lot of time. You obviously don’t want them to procreate, so sexing is important. It’s good if you can separate them so that they can still hear and smell each other, but they must be kept so they cant reach to mate across cage bars.
You should feed them ad lib grass hay and water. They’ll benefit from 1-2 tablespoons/day of good quality rabbit pellets too -f ex Oxbow, Sherwood or Science Selective.
Its not very difficult to clip bun nails, if you are 2 people. One person holds the bun in their lap, the other person does the clipping. For each foot you can give a yummy treat such as a sunflower seed. Styptic powder is good to have on hand in case you accidentally cut into the quick.
We’d love to hear more about these buns!