What are the ages and genders of the four gliders? If there are two bonded pairs, I think that the females could be very aggressive toward Boo. If there are four males, of course, that won't work either. If there are one male and three females, or four females, then you'll have a good chance of getting Boo into the colony. Now this is just my opinion, as I've only got little boys; there may be other answers from experience.