I have five seven week old Australorp chicks that I got at the local farm store; all were supposed to all be pullets. Three developed tail feathers the first week, two barely have tail feathers at seven weeks old. These two also have developed pink to red combs and wattles that are much larger and more developed than the three pullets. The pullets have small, yellow combs and no wattle development yet. The attached pictures are of the suspected roosters. If these are roosters and they breed with my hens, will the hens hatch and raise the baby chicks without intervention on my part? I also have 11 RIR and Barred Rock hens that are 2 years old, will Australorp roosters also breed with these hens? The only experience I have with roosters is once again buying pullets and getting a rooster in the bunch. He was extremely aggressive and was culled before he was a year old. Not a good experience, not sure I want anything to do with a rooster again. My hens are free ranged on the days I don't work during the warm months of the year so would a rooster be helpful in protecting them in this situation? I keep hens for the eggs and the only advantage I see in having a rooster is possibly growing the flock without having to raise baby chicks inside the house! Any advice and answers to my questions is appreciated!