Hi, congratulations on reaching number 1! I've just added a new chicken and some performance improvements, so it should be running better. Now you can buy special chickens with real money instead of buying 10 regular ones and combining them.
There was actually a kind of exploit or oversight on my part that I've tried to fix by increasing the price of chickens. Now the maximum limit also takes into account the number of chickens you have.
You might be seeing a very high price now, but that's because you have an overpopulation of chickens. Sorry! But chickens need their space.