I noticed today that one of my 4 month old pullets has an enlarged pendulum crop. I immediately scooped her up and felt it; it is literally full of sand. My first thought was she was so hungry she ate sand?! But then I thought maybe coccidiosis and she is trying to "fill the void". She was making neck jerk movements like she had something stuck but couldn't see anything or feel anything there. She definitely has dropped weight and was uninterested in the food I put out. Again maybe she was "too full" from the sand. I couldn't feel any water but water and sand... Any ideas? She's one of my french black copper maran babies. I'd hate to lose her.