I picked up a mix of chicks from a local feed store about a month ago. All the chicks looked identical, they were all black with some light silver on the chest and underneath. As they have gotten older they are all starting to look very different from each other. The two I am most interested in I have posted pictures and would love some ideas on what they might be? They are just over four weeks old now. Sorry for the crappy pictures they were the best I could get. The first one started out as a mostly black chick and has now become a silvery-bluish color. With some really light tan around the neck and chest. Here's a picture. Any ideas? The second one may be a little harder. It also started out as a black chick and is starting to get some pretty reddish-brown on wings and neck. Any ideas on this one? Thanks in advance!