My girls are 21 weeks old today and normally very mellow/quiet. This morning I let them out and they seem agitated and are making a bunch of noise, especially my bigger BR. I went out and looked around for anything that might be nervous... Neighborhood cat, hawks overhead, etc. and there's absolutely nothing going on. Is it possible that she could be getting ready to lay? Her comb has gotten more and more red over the last week so I know she's getting close but what other behavioral signs will they display? Thanks!