Thanks guys. It seems to have gone relatively okay... it was all pretty peaceful this morning and everyone is okay. The new boy was lying with one of the existing pair when I checked on them first thing. However, sitting watching them and I have seen that they randomly chase the new boy. They aren't aggressive and aren't going to attack, just chase him off. Given they will also lie and eat with him, I am thinking it is maybe just keeping him in line? He can be a bit annoying to them... he isn't trying be bad but he just seems to get in and about them a bit too much and loves the company so I think they are just trying to put him in his place and remind him off his manners. I haven't noticed a pattern though for when they do it... he just runs away but he is still comfortable around them.