Thanks all who have posted. I really enjoyed this thread. I have not had chickens that long, three years going on four. I keep froo froo and rare breeds and some special project varieties, and sell chicks, started birds and hatching eggs. Five things I'd say that haven't been said too many times already.... okay, six, no, seven!
If you breed for specific traits... Keep at least one backup rooster for each type. Always, and be growing out a third one just in case. The good thing is, if it turns out you don't need them, they taste exactly like chicken.
If you breed silkies, and want to be less in the red, get better silkies.
Saving on feed... keep the sparrows out, and cover it.rodent proof it at night. Keep rodent bait out at all times.
How much does a chicken eat? As much as it wants. Period. If you have to cut pennies, cut your flock instead.
If you want to improve your flock, hatch a LOT of chicks, and cull hard. I try to keep my hens down to just the best half dozen or less per variety.
Learn how to work your incubator right before you go sticking eggs in it. When chicks develop, toward the end, they throw off quite a bit of heat and carbon dioxide. They can overheat and/or suffocate in too small of an incubator. Sometimes less is more.
If you are not zoned for poultry, don't get them.