Hello I am very new to raising chickens. In fact, less than a week. Last week we got 6 supposedly 3 day old chicks from our local feed and seed. However, you can definitely tell some are older than others. One of my smaller younger ones has a yeasty smell coming from her beak. Not overly smelly but definitely smells different than the others. The problem is that everything I read mentions sour crop and describes it as swollen and squishy. My issue is that sometimes I can find her crop and sometimes I can't and I would never term it swollen. I've felt the older ones when they're full and can tell that but she never gets a really full crop. Any ideas?