Gosh I'm so new to this whole chicken thing! I have a Black Australorp and a Barred Rock... I picked up my Barred and she just seemed kinda thin. I only really noticed it this week. Should i be concerned? They are both only around 13 weeks and i've heard the weight changes when they hit a grow spurt. The other one seems to be ok though. The Barred just seems to have her breast bone sticking way out and its really sharp. I think that's odd since they eat all day. Any thoughts? Should i try and fatten her up? Or just wait and see what happens? She's not lethargic or anemic in anyway and seems to be having a great time in my yard so i doubt she's sick. But again, i'm new, so i wouldn't know. Thanks!