Our chicks are about 3 weeks old and when I went out to check on them this morning I was shocked at what I found. They had tipped over the feeder which is the kind that has a metal base and you screw a glass mason jar onto the top. The jar had come loose from the base and a chick has crawled inside it to get to the food. She had gotten herself stuck and could not back out of it. Her body was blocking the entire opening and she was gasping for air. Who knows how long she had been in there. I picked up the jar and had to give it a good shake to get her loose. She laid there for a minute still breathing funny and in a bit of shock so I brought her inside and dusted her off. We sat with her for a while until she perked up a bit. She is fine now, but I keep thinking that if I had gone out there a few minutes later, it may have been too late. Of all the things to worry about with the chicks, this one had never crossed my mind!