One of my Americauna hens seems to be clogged up. Her craw, (the bag where the food first goes) is very large. She kicks at it and seems to be very distressed. It looks to me like she isn't moving her food to the next stage. Maybe she ate something that is obstructing the passage. Is there a way to fix this problem or should I just put her in the freezer before she gets sick and dies?