Please help me. My hen, who presumably has an impacted crop, is extremely lethargic. She's been in all day and I've done as much as possible, treating her with olive oil and massages. She isn't wanting to drink or eat, the last she did was around 3:00-4:00 and it was very little. She's been breathing hard and seems rather limp and lets me hold her, which is incredibly unusual. So far, I've seen no poop either. Her vent is not blocked on the outside, though her poops that she took earlier were running. What should I do?