Too much humidity?

[minhlac]

Is there such a thing? Can it be harmful to the eggs if not kept at 60%?

[jchiar]

to  much humidity can drown the chicks

[minhlac]

Everywhere on the internet and everyone here says to start them off at 60-65% until the last couple of days and increase it to 85%...  The breeder I got the Gambel eggs from said to keep them at a constant 82% throughout. 

What do you think?

[jk]

82% throughout the whole incubation is way too high... that would drastically lower your hatch rate. Around 60% before the last 3 days and around 70% the last 3 days has worked best for me...

[tigermtsirius]

I am able to get 80% humity ... but when I try dropping it some it drops to 60%.  Will 80% cause a reduced hatched?  I already have 13 hatched (out of 50 eggs), but they did hatch a full day early. 

I only had one chick have a problem getting out and that was when it had dropped to 60%.  I ended up helping it some.  It was much weaker then the others at first but seem to be fine now.  I am leaving it in the incubator until tonight.