Here is an example to help you learn. Now, here I have three bantam hens. One does not lay due to old age so I can't count her. So I have two. BUT their bantams so they count as 1 chicken. I count the really tiny bantams as .25 of a chicken though.
Then I got an incubator. Ordered eggs of the net and had standard Barred Rock 15 eggs. DH got it onto his head that he wanted to get some eggs. So along came incubater #2 and he ordered six Aseel eggs. Then he confussed me while I was on this forum and not listening to him and instead of dinner I got a box with 60 Texas A&M Quail eggs. So in they went to Incubator #2 because I had no were else to but a third incubator. Still I only have 1 chicken because eggs don't count in chicken math.
Well, the hatching did not go so well. Out of the 21 chicken eggs total, we got one Aseel chick. So, we had to get him friends from closest
TSC-40 miles away. They have a 6 chick minimum. So I got 3 bantams of some form and 3 Production Reds. So while I have "10" chickens of various ages technically still I only have 1 chicken since chicks and old hens don't count.
Now, next week: Sunday to Tuesday I'm hoping the Quail will hatch-if some do, that could be upwards of 55. We have lost about 5 eggs. Monday, I'm picking up a box of 25 pullets for a seminar my dh and I are doing on starting chicks. Friday, I'm getting 25 Russian Orloff pullets from Privett Hatchery and on Saturday the pullets for the seminar get homes. (I hope!). So that would be 35 chickens (not including the 25 the seminar pullets) and still I only have 1 chicken.
Then the following week I have 20 pullets- 10 Russian Orloffs and 10 Barnevelders coming from Ideal Hatchery. So that is *gets calculator* 55 chickens (80 if the seminar chicks all come back) still, since quail and chicks don't count I only have 1 chicken!
Oh I also set 24 eggs (12 bantams and 12 standards) due to hatch the 11th of April. So, if all of the chicks "stick" that's 104 chicken bodies. And yet I only have .........1 chicken!