Hi I am new to the chicken world and have a chicken and rooster together. She laid her first egg on Dec 6th and then a week after she laid another one. Unfortunately both of those eggs disappeared the following day they we laid (we are assuming by a predator) . We got her a nesting box and now she has 6 eggs with the first one being laid on Dec 26th. My issue is that it has been 3 weeks since she laid the 1st egg (that we still have) and she has not started sitting on them yet. She still has a good temperament and is not mean at all so I don't think she is broody? Is this normal?