I recently noticed one of my week old baby chicks wiggling their neck around. I thought that was odd, so this morning I checked her crop and it wasn't all they way emptied. I have not provided any treats but finely chopped egg and a clump of sod with crushed dried mealworm in it. She does not act lethargic or have any other symptoms, except wanting to be under the MHP more than the others. This is my first batch of chicks so any help would be appreciated!