That's very kind of you, Kevin - I wasn't asking for a replacement, nor expecting one. No idea what happened, they were all fine last night when I bedded them down, and they've been eating and drinking fine.
I'm assuming it was the male being much bigger than the other two. Would that be right? I haven't inspected it's rear end

I don't know if the two eggs I had from yesterday would have been fertile but Stuart (CSSA Chairman) has popped them in the big incy with some other eggs so we'll see what happens.
I've put these two in a clean cage with fresh bedding, food and water.
On the brighter side, Allez has retrieved it from my pond (and swum!!! Yippee) three times, so it has definitely proved it's worth. Nothing is wasted here, just waiting for the cat to bring me another bunny so I can cover a dummy with the skin. (the dogs get the rest as a treat)