I have had two good broodies... tried using a few broodies that clearly weren't gonna be good.. so they didn't get to keep chicks. Luckily none of the broddies went psycho with the being nice one day and killing chicks the next.
My ducks though
my Muscovy rock!
I have only once had a dead duckling, and that was a first time mama (not even a year old) on her first clutch, and all of the eggs got super muddy nasty (mostly the weather fault, not hers) so only one hatched and then I found it dead... I am not sure what happened... but at least she didn't eat it.
Everyone else has been great... first clutches don't tend to have a high hatch rate, but my experienced moms do excellently... they do loose a few because I flock breed... so some of the eggs are several days to weeks behind the ones hatching... but that is my fault if I don't snag them out of the nest soon enough after a clutch hatches.
I had I think 11 ducklings out of the first clutch they had with me (but she was experienced), I think there were close to 20 eggs, but it was super cold, so that was the only time that a few were lost at pip and/or zip... it was below freezing...
Still not a bad hatch rate..
Usually out of 20 eggs I get more like 15 ducklings... and a few of the ones that don't hatch are clears.
Once hatched, the ducklings do great.