I picked up 6 chickens from a local feed store in the beginning of April, and three of those chickens do not appear to be the breed I purchased.
Mystery Chicken #1 Biscuit (definitely not the RIR I bought)
Picture of the crest-thing and brownish chest
You can see Biscuit's legs a little more in this picture
Mystery Chicken #2 Pebbles (Supposedly a barred rock)
Pebbles has some fluffy cheeks developing
More fluffy cheeked Pebbles (on the right) Chiclet (on the left)
Mystery Chicken #3 Chiclet (also supposedly a barred rock)
Chiclet on the left
At this point, I just hope most of them are hens...
Let me know what you think!