Yes I feel like @CluckNDoodle and I discussed that last year? Ive hatched a few different lines of Legbars and I’ve had quite a few early.Are they? Gosh, that makes me feel better.
at first I thought it was a temperature possibility because Legbars were my first breed to hatch, even with a calibrated thermometer and reliable brinsea incubator they came early. But eggs incubated together usually hatch within 24 hours and I’ve since had multiple mixed breed hatches where many Legbars are out and done on day 20 and other breeds don’t start pipping for 24 hours or more in the same incubator.
far from scientific just an observation.