The last 2 I killed are frozen solid so I can only give you the freezer bag weights of each bird (breast with wings & back with thighs & legs) of some 20-22 week old crossbred RIR/Maran barnyard mutts.
27 oz and 31 oz.
If I cook them any time soon I'll update with the actual breast weights.
My wife is a yuppie big-city girl and only knows how to cook store bought chicken, so she puts a can of chicken broth or bullion cubes in all her chicken dishes. Whatever she cooks tastes like you're eating a straight can of chicken broth.
She can't understand how when I cook homegrown chicken stew or soup the chicken taste like chicken, the vegetables taste like vegetables, the white gravy sauce tastes like white gravy, the noodles taste like noodles, the rice like rice, each ingredient has it's own taste instead of the whole thing tasting like you're eating a bowl of chicken cubes.