I have two brothers who I raised from 5 days old (not for much longer if the council gets their way, but that's another story) When they were very young, for possibly around the first month or so, they would scream like crazy when I left the room they were brooding in, I didn't even need to leave the room even, as long as I was out of their line of sight they would cry for me.
After their first molt probably, i'm not exactly sure when, they became quite happy to be alone; No more screaming for daddy, which was great because I had to return to work. I was so worried about leaving them...but that's the thing, there are two of them and they've known each other from day one, your gosling is all alone in a land of chickens - Think of it like packing up and moving to china, you don't know the language of the natives, you don't know the culture, you're so isolated and anxious all the time because you have nobody that understands you