I feel like I exhausted myself researching shipped eggs after my first 50% hatch that I thought I was already prepared for.
I read a lot of opinions that you should hatch an egg the way it was incubated across the board. I don’t have experience one way or the other to know. And rules are made to be broken. I got these ducks so I could keep a trio and hatch my own eggs to learn and learn and learn.
Anyway I got off topic. In general it seems like 75/25 on hatching shipped eggs on their side. Some people swear by it, and, in general the air cell is supposed to be pretty solid by day 15, or you’re sort of SOL anyway.
I don’t know totally what I think yet... I’m a newbie forming my opinions. It seems that hatching on sides is a purist view. One of the “only the strongest survive” don’t ever assist, it’s bad for genetics kind of things. From what I read, it’s pretty accepted that hatching shipped eggs upright after turning upright is the way to go and slightly increases the poor hatch rates.
Back to your point, I’m going to hatch the local eggs I got upright that are being turned upright. I haven’t seen it a whole lot but those that DO use cartons say it, and it got me thinking. I’ve watched multiple videos lately of large scale commercial hatcheries with the automated systems and they are hatching upright. In a propaganda

gig) video for the “organic” Broiler hatchery, I can’t remember the name, i saw they developed these hatching trays where they are hatched upright and fall to the tray below.
I’m going to ask Moyer hatchery next time I talk to them about it and if the large scalers are doing it for automation or hatch rates.
Interesting....