I wanted to add a short video but that doesn’t seem to want to work. I have a Brahma hen that has been doing an odd motion with her neck. She always tends to fill herself up— she’s a big girl, and I’ve come to expect her crop to be pretty big. But I don’t typically notice her doing the funky neck thing like she’s trying to swallow down her stuff. In general she’s always been one of my healthiest hens, but I’m a bit concerned today because her crop seems bigger than usual and I don’t usually notice her doing the neck thing. I don’t know how much she ate this morning because my dad feeds them their scratch. My flock lives in a fenced in dirt yard and only the occasional small bird gets in. They eat basically the same things every day. Two nights ago I treated everyone for feather mites with ivermectin poured on, which works for deworming, too. In case it turns out to be sour crop, are there any catalysts that could possibly cause more of the flock to come down with it?