Wise people from unwise people are created through trial and error.
Just some words of wisdom learned in the worst way...
I moved one of my redneck brooder boxes (the one with my Indian Red Jungle Fowl) from my bathroom into the back room and got sick of walking back and forth to get food, so last night I moved the crumble bag next to the brooder box. Not RIGHT next to the brooder box, but fairly close. Overnight it fell over and draped over the brooder box. Apparently the pull string, which was still attached to the bag because I only halfway open the bags, somehow managed to work its way through the wire mesh of the box and one of my chicks must have done heroic leaps to get up and catch it, so it could then be swallowed. This morning, when I saw the bag, I pulled it up off the brooder box, the lid flew off, and something small and round and brown and fluffy went flying over the side to hit the floor. When I realized what had happened, I was absolutely sick.
I ended up having to cut the string, and I'm praying that the baby will pass it and that no internal damage was done. I fully expect to go home and find a dead baby in my brooder box.
Either do away with that string, or don't keep your feed bags anywhere near your chickens. Don't keep anything with strings anywhere near your chickens.