You can see my story about bonding DJ and Curly Sue here, along with some other stuff about how we came to be a bunny family:
http://www.therabbithaven.org/DJandCS.htm
I also just finished bonding little Deanna into a trio with Curly Sue and DJ, and we officially adopted her this weekend (one of the hazards of fostering). The bond of the trio was a little different. I started out the same way as I did with the pair, to let the 3 of them out into neutral space. Yikes, big mistake. DJ, the boy, was chasing and mounting both girls, growling at us, and in general just being a snot. So I asked our resident bunny expert at the Haven, Auntie Heather, and she told me that a trio introduction should be with each of the buns and the new bun separately at first. We tried that, and it went much smoother. DJ and Deanna got along well right away, but Curly Sue was terrified of Deanna, running away everytime Deanna came near her. After a few more of these one on one sessions, they all seemed to tolerate each other, so I used another Auntie Heather idea and set up a big super fun play area in neutral space. This was the week between Christmas and New Years, and the girls were off from school and I had the week off from work, so we could spend a lot of time with the buns and watch them together. I grabbed all sorts of stuff from the garage and made a bunny play area with boxes, cardboard tubes, wooden planks for ramps, some old corkboards for platforms. I set this up in a 6×12 space with a litterbox, food and water and just let the buns hang out together. This worked really well. After two days of this, they were spending the entire day together in the play area, eating greens together, using the same litterbox and grooming each other. At night, I moved Deanna’s pen right next to the big pen so that they would not forget her smell.
It took about 3 days before I tried letting the three of them be together in the Family Room, which is Curly Sue and DJ’s play area. Deanna got chased alot, so I tried putting the three of them together in the pair’s pen, with us watching. This did better. Somehow having less space forced them to get along better. We left them in the pair’s pen together for several hours a day, and after a total of about 10 days from start to finish, Deanna moved in with the pair.
Are there any people at the shelter/rescue you are going to who know a lot about bonding? It really helps to have someone that can read the subleties of body language to know how well the buns are getting along. I worked on two bonding sessions at our adoption show this weekend, and one was a lady who has been looking for a bond for her girl bunny for a long time. We were the fifth shelter/rescue she had tried. I took her girl and a bonded pair of boys around for a "first date", and one of the boys nipped at her and I thought "Too bad, this won’t work". Heather thought they might get through it and she spent some time with them. The lady wound up taking them home! This girl bunny had a history of attacking other bunnies, and somehow the fact that these two boys were higher energy helped to calm her down.
One more thing: don’t be afraid to try two girls as a bond. Sometimes these work out great too.