Yes I see what you mean about it heading upwards. I think I'd be tempted to help too. I lost a chick 6 weeks ago who had halfway zipped and then got stuck. It has started in the middle of the night and when I got up in the morning I tried to assist but was too late. It would have been a beautiful little'un too.Just got a couple of pics (not very good ones!)
View attachment 1022777
This is the zipper, it's been at about 45 minutes now and seems to be heading more upwards rather than round so I'm thinking it stuckMight have to help it out if it does not hurry up soon.
View attachment 1022783

Your first gosling is goooorgeous though!!
