We have a 4MO Welsummer hen that hasn't been able to stand for long as of yesterday. She seems sluggish, like she's dragging her hind end, and wants to immediately sit like she's laying. She seems otherwise OK, no other physical or neurological problems but we unfortunately had a chick around the same age just die of Merck's Disease (even tho the feed store had TOLD US that all these chicks had been vaccinated for it--UGH!). She isn't showing the same symptoms as Merck's yet, no drunken wobbling or uncontrolled head twisting, and I'm wondering if she could be egg-bound? She just started laying recently... How would I check for that? Any ideas or thoughts? She seems to be eating and drinking and pecking at the eggshell. Could it be a deficiency? Or am I deluding myself and it's most likely Merck's? Unfortunately, the other hens can tell something's wrong with her and keep coming over to peck at her head. Our turkey hen was really going at her a few minutes ago.... It's sad to watch Any suggestions would be greatly appreciated. Thanks.