So we have 4 pullets. 1 Silkie bantam, 1 easter egger, 1 gold-laced wyndotte and 1 Cochin. Bought them all May 1st, all were 10-12 weeks at the time. All seem completely healthy, have a 2 perch coop and a 8'x10' run. Thought there might be an issue with not enough food (?) improved their feeder to be constant (and pellets, not crumbles), added oyster shells in a separate feeder as well as the usual scraps,fresh veggies, etc. We are in Denver so the weather is temperate, not too hot or too cold, they have a constant water supply... Maybe the coop is too small? we let them out almost every night to wander the yard outiside of the run as well.. the only odd thing is the silkie will be inside the coop on the perch at sunset, but the other 3 will sit on the coop as opposed to going inside, but before it was the other way around, the silkie was the odd girl out.... Help?