So, I ordered a chicken step feeder on Amazon. I want to know if my chickens will know how to open it and if it will keep the mice and birds out of it. I've have a problem with mice getting in the poop tray and eating the chicken feed my chickens spill, then they die in there because of their poop and my chickens poop. Then there birds that eat it tell I have to fill up again. I went from filling the feeder every two months and now I fill it up two to four times a month. I only have two chickens. All i want to know if it will work. Please give feedback on this. My coop The chicken step feeder, this what I ordered.