If you know please share. If you don't know, I'm working on a spreadsheet to track feed and maintenance costs along with daily egg production for up to 10 chickens by name. I got a lot of refining to do before I share, but if you have suggestions please comment. The way it works is each day you enter the cost and weight of any feed you buy and maintenance costs then you enter the amount of eggs collected for up to 10 groups (or ten chickens). As each day goes by, the spreadsheet becomes more accurate and allow you to see how efficient your chickens are.