I agree, it would be better to house them both indoors, even though bonding won’t be possible. Rabbits often enjoy having a neighbor, even if they aren’t bonded, so it’s fine and encouraged for the buns to be able to see each other. Depending on where you live there are many hazards outside. The most alarming currently is RHDV2, a deadly rabbit disease that is spreading throughout North America and some regions in Africa.
A lot of people with solo buns will house them in side by side pens, and then given them alternate exercise time in a bunny-proofed room. When I had this situation I would give one bun exercise in the morning and the other in the evening. Once I knew I could free-roam them safely I gave one daytime roam time and the other got the night shift. 🙂
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.