well 17 of my 24 seem to still be on track.. This is my first hatch, and I am so excited! They are on day 15, how much of their egg should they be taking up? they still seem to be small enough to do chickie acrobatics in there. Is that about right for 15 days? or are they developing a little slow? My BO and EE babies seem to be between the size of a US quarter and half dollar. The banties are about the size of a quarter or just a tad smaller.