okay here is my dilemma. my dad hatched two chicks for me that are now 6 weeks old. i have had them in the coop since about 3 1/2 weeks. he hatched one more that is now 3 weeks old. i also have 11 more that are at 2 weeks, and fixing to buy 6 to 8 more a few days old. all of the younger ones are in my brooder which is 4ft by 4ft. i hope to not have any problems introducing the new babies to the younger babies but we will see. i will keep an eye on them for a couple hours at least. when should i introduce the rest of the chicks to the oldest chicks? i know they are still too young now, but i don't want to wait too long and the other two get too aggressive toward the others. the coop is probably between 12x12 and 15x15 (haven't measured it it came with the house we bought) and has two separate runs, however you have to go through one to get to the other. also a side question. the oldest chicks that are in the coop are leghorn/welsummer cross. i never see them in the run. they are always in the coop. i make them come out every day into my yard by picking them up and bringing them outside. they will finally go to eating grass and bugs after a few minutes but never get more than about 5 ft away from the coop. the little roo is much more bold than the little pullet. they seem eager to get back in the coop when i let them. how long will it take for them to actually want to go outside? is it because there is only two of them? One last question. i plan on having around 15 hens to try to get around 12 eggs per day. should i have two roosters? i do want my eggs to be fertile as i would like to sell chicks and hatch new ones to replace hens that burn out. will i have problems with fighting if i keep two roos? sorry for all the rambling. i just want everyone to know my situation so you can best answer my questions. the oldest 3 are all leghorn/welsummer cross. i have 9 purebred australorps and these are the ones i plan on keeping my roosters out of. i have two gold star pullets. i am going to buy 4 barred rock pullets and either 2 or 4 more australorps. If you are still reading thank you and i look forward to your advise.