So this morning I have a blue fart egg on the ground. Here's why it's a mystery: I have 2 araucana hens laying normal sized blue/green eggs, 1 barnyard mix hen laying normal sized brown eggs 1 hen who has never laid anything and who is a barnyard mix (thread about her here) 8 araucana chicks (not US standards, I'm in Patagonia and our Araucanas are like the UK/NZ ones) 7 of the araucana chicks are 12 weeks minus 2 days, and one of them is 12 weeks plus two days. This one I hatched myself and so I know her exact age. I've even been thinking that she could be a rooster because she has a big comb that is so so red. Could she be mature and laying her first egg at 12 weeks + 2 days? She hatched on October 21. The others are visibly less mature than she is, so I doubt it's any of them. Here is a picture of her: So what is the most likely? That one of my regular-like-clockwork araucana hens laid a fart egg, or The orange/red barnyard mix finally laid her first egg, and she must have the dominant blue egg trait, or My 12 week chick laid her first egg? Thanks for your input! When I confirm this in the next few days we'll find out what's right!