The last 3 nights our 4 week old chicks seem to be hunkering down in the fenced in area outside of their coop (it is an old dog kennel that is 1200 sqft- their coop is inside of this). They typically stay within 6-8 feet of the coop and do not refuse too much when I pick each one up and move him/her to the coop. They do squawk and go crazy once in, but they don't bolt out. It has not been hot here- in the mid to low 70's- right now it is 69 degrees. Is it normal for them not to go to the coop once it gets dark or nearly dark? They have no issue going in and napping during the day. Thanks!