I am relatively new to hatching and recently purchased 6 Ancona duck eggs on Eggbid.com from a nearby seller. The seller sent 8 eggs and I am happy to say all have developed well. Yesterday was day 25 so I took the eggs out of the incubator and put them into the hatcher with a little lower temperature and higher humidity. Today is day 26 and 7 of the 8 eggs have bumps or small cracks pushing outward from the shell - none have holes, just a bump pushing outward. I can hear chirping so I do know at least a few are alive. The first bumps were noticed about noon today but nothing more has happened to each egg - just one "bump" pushing outward. Is this normal? Last week I hatched a few bantam chickens and none of them had bumps like these, they pipped and zipped in just a couple hours.