1. Unfortatenly the egg in question did not make it :(
I had poked a safety hole in case they were stuck but between then and the next time I opened the incubator (had to take out some rowdy ducklings) all movement had ceased. Further investigation showed that the chick looked to be...
I'm hatching cayuga ducks and noticed that one of my egg's air sac has gone dark. Candling shows nothing - just darkness. The egg was doing well yesterday so this happened overnight.
They just hit day 25 so they're due to hatch in 3 days.
Any help would be much appreciated