When I picked up one of my 4 month olds today I noticed that her crop was very big and like a water balloon. I felt around for a blockage, smelled her mouth, and looked her over and there doesnt seem to be anything in there but a bit of food crumbles and alot of water. I gave her some olive oil and massaged her crop for a bit and still felt nothing just alot of water. Could she have just been thirsty and drank alot? It is quite weird. I also have had them on duramycin for the past 5 days. I was not sure if that could be a reaction or not to the meds too?