Had to cull one of my my two week old chicks. I got it from the feed store and it was about two weeks. It went down on its legs for some reason and the joints were looking terrible. Even though it was still active and eating and drinking- Didn't want it to suffer having to flop around the rest of its life. Leg joints were already swelling and getting raw from crawling around. I grew up in the country and could have broken its neck or cut its head off , but my mother and my kids just couldn't deal with that- So what I did was modify a method I saw somebody else post on here. I put it in an ice cream bucket and put a margarine dish in beside it. I poured some baking soda in the margarine cup and then then poured about half a cup of white vinegar in also. I immediately closed the lid when it started bubbling. It only took a minute and he was gone. Now I know the little thing won't suffer any more. I read that this anethitizes them first and then they stopped breathing. This worked very well and seemed to be the most humane and less messy method . Just thought I would share that with you guys in case you have a sick chick. I just couldn't stand the thought of him going through life hopping around in the dirt and mud and being miserable.