We have a mixed flock of Golden Polish, Buff Orpingtons, Delawares, Buff Brahmas, and what were billed as "Araucanas" but I suspect to be EEs. They are just about 18 weeks. I think I am seeing some squatting, and they are noisy and making huge poops the last 2-3 days. Some of them (some Orps, Delawares and EE's, one Brahma) are getting redder combs. The most notable new behavior (started a couple days ago) is digging holes in the dirt in the stall where they live (with access to the pasture) and wallowing around in it, rolling in the dirt and pulling dirt/bedding forward with their beaks. Sometimes 2 or 3 will share a hole and roll on each other. Here's a pic of the Orps, rolling around: So is this an "I'm gonna lay an egg soon" behavior, or are my hens just messy???