I'm new to this forum & have just started back into chickens again after many years of not having them. I could use some opinions on whether the 3 RIR I have are roos or hens. I have a suspicion the biggest one is a roo, but I'm not sure. The largest one is 5 1/2 months & the two smaller ones are 4 1/2 months. I'm also questioning one of the smaller ones because of it's coloring. What do you think?