I think Dotty is def a roo, she has red gullets coming in. Gretchel has a slight color in her comb so I'd watch her too. You will be able to tell more and more every week, look for the comb to be really red and the under gullets to be red and show. Compare them to each other
) How many roosters can you safely have together? What can you do to make them all "just get along?" if they have enough space/hens? The coop we are finishing up has aprox 275 sq ft inside and the outside "run" has around 600+ sq ft. (Still a work in progress)