Well it's no longer hot, so any thoughts that the behaviour was prompted by the warm weather must have been wrong. The grooming continues and whilst it is so sweet to observe, changes in behaviour should be questionned right?
Surprisingly it is Tui who is doing the most of the grooming, although both rabbits are doing a lot. It would be really nice to be able to put this down to Tui developing a more loving nature towards Tethra, but with rabbits I suspect it might be a bit more complex than that. She was even at it whilst Tethra was trying to eat a few Apple sticks at 7am this morning!