I have 10 Barred Rock hens who lay consistently. There are 4 laying boxes in the coop. They wait in line as each ONE lays an egg. Seems to be taking up to 15 minutes for each to lay an egg. They're very healthy and have been doing this since the start of their laying. Yee gads. Any answers? They come on out doing their egg song and of course seem very proud. Just forever to do their thing. They free range, get laying pellets, calcium, some meal worms for treats. They also get blueberries almost every day (once with pellets). No corn or very little. Absolutely no sweet cob (they become wild/crazy). Any answers to this parade line of chickens waiting despite the availability of laying boxes? So they lay their eggs from 8 am to around 12 pm-ish.