Hello, we are hoping you can help us. We hatched chicks for a 4H project. And my daughters are using them for their 4H/pet chickens. But they don't know what they are. I contacted the man we got the eggs from. He has a Black Cochin rooster and hens (some Rhode Island Red, some Barred Rocks, and some Comet). There is also a bantam rooster of unknown origin (but definitely not a cochin and no feathers on any bantam feet) and his two hens. I was told at least one of the hens was a Black Japanese. I will give a brief description of each of the birds as I post the pictures in case that helps. This one (Chocolate) is six weeks old today. It appears to be a bantam. Smaller than the other birds and came out of a bantam egg. This one (Spike) is six weeks old as well. Same deal as Chocolate. This one (Cookie) came out of a bantam egg and appears to be a bantam. Same size as the two before her. This one (Custard) came out of a bantam egg but is MASSIVE!!! As in almost as big as my Black Japanese bantam hen was. And she is only six weeks old. All of these birds are six weeks. This one (Eileen) hatched out of a standard egg. She appears to be a standard. This one (Fluffy) hatched out of a bantam egg but appears to be a standard. Look at the feathers on her feet. This one (Missy) is one of only two clean legged ones we hatched out of fourteen chicks. She appears to be a standard. And she came from a standard egg. This one (Scruffy) is our other clean legged. She came out of a standard egg. This one (Zappa) is just as big as Custard is. Appears to be a standard. If anyone can maybe sex these guys as well, that would be great. They are all six weeks old in the pics. They were taken a couple of days ago! Thank you so much from all of us for any help you can provide!