I would like to say bigger is better,when they are out in the yard/run and dirt is always better than concrete. Of course they squeeze together when sleeping.
Cool facts,I totally agree with dino heritage, look at a Cornish and a T-Rex, Cornish have wings instead of short arms as a T-Rex. Chickens are also carnivores, have you ever watched a chicken run down a grasshopper or mouse. I imagine a T-Rex would run down prey the same.
3 z of liquid per gallon of water for 6 days. I put 6oz in 2 gallons of water and left them locked in the chicken yard till water was all gone about a week. That cleared everything up, but I disposed of all the eggs for 3 weeks after treatment. I think its best to treat everybody at the same...