I have six leghorns that have been laying eggs already for about 4 weeks. My red star chicken started laying her first egg on Saturday. Today we had 4 normal eggs from my leghorns and 1 white egg with a soft thin shell and 1 brown egg also with a soft thin shell. Today was one of their first hot humid day since they started laying eggs. I read it has to do with heat and poor appetite during a hot day. I feed them the regular poultry feed for layers. Am I missing something or this is just because of the hot day they had.