Delilah is only a few days old. She's super sweet and I just got her today. A video is below. She does this a lot. I listened for a gurgley noise, but her breathing is clean. She is eating and drinking normal. No pasty butt. I just got her tonight!
Many of my chicks did this, not sure why but they are all still doing just fine today and they are close to a year. After a while that stopped. I still don't know what it was.