Okay I got these four chickens back in June of 2014. The white one I know for sure is a hen because she has been laying eggs. Now my gray one was supposed to lay before the white hen which makes me worry but I know it's wintertime and egg product does slowed down. The reason I'm worried is because when I cracked one of the white hens egg today I saw a red dot. Please help. Here are their picture. These 3 have yet to lay an egg.