I have 4 hens that are broody. I keep throwing them out of the boxes, but they keep going back in. I am SURE they are broody, cuz I turned them over and all their chest feathers are gone. (I was wondering where all the feathers were coming from all over the coop) I am NOT amused. Here I have to come up with 96 eggs in a 2 week window and 4 hens are not laying. And they are not going to get eggs to sit on, cuz I might have 50+ chicks coming back.
I scrambled up a dozen eggs for them today....not because they needed the food, the little piggies, but to check on the fertility of various eggs. With my rainbow of eggs it is easy to see if I have checked each hen's eggs. I have about 80% fertility on 2/25-26 (that's the date on the eggs I checked) I am assuming that now they are free ranging more that fertility will only increase. Not sure if I want it to, tho....means more potential chicks from the grade school hatch.
As far as "helping" when a chick fails to hatch after pipping....doesn't usually work, in my experience.....there is usually a reason that the chick fails to get out of the egg. Of course if it is a humidity problem you might be able to save a shrink wrapped chick, so it's worth checking into...just don't fall in love with it until it has survived a week....then you won't be dissappointed if it doesn't make it.
I did once have one survive and thrive, but I didn't totally help it out of the shell, I just opened a large enough hole at the pip site that the beak didn't fill it entirely, so the poor thing could breath.