I've noticed for some time that my hens will gag on their food. I frequently put their food up for most of the day so they forage, and when I let them have access to their food again, they eat it fast. They will then stop, and kind of cough or gag, almost like I would if it 'went down the wrong tube.' Is this typical? Also, sometimes my oldest hen sneezes randomly, and she was the first one I noticed having the gagging problem. Maybe it's some sort of chicken illness? She's sneezed for as long as I can remember (got her as an adult). Thanks for the suggestions!