My Blue Cochin is still not laying eggs at 26 weeks old. I notice that her comb and wattles are much smaller than her flock-mates, and I'm concerned about her. She's eating and drinking well, and about the same weight as her sisters. She is low in the peck order and kinda distant/slow. I don't care when she starts, just as long as she's healthy. Any health issues I should watch out for?