I routinely incubate my eggs at home at cooler temps, between 84 and 86. Mine usually hatch later, between day 60 and 70. However, my babies in general are slightly larger, and I have had better success with them feeding quickly.

I don't do any crazy large quantities of eggs to say for sure that the larger baby size and quicker feeding after hatching are a definite trend, but out of my last 8 clutches incubated at cooler temps, that was the trend I noticed.

I wouldn't say I did any kind of official scientific type study on it, just an anecdotal "This is what I've noticed".

Let us know how yours work out!

-Jen