Poorly hen with a dropped wing

[Rudies Roost]

Hello all....it's been a while since I've been on BYC ... but I was after some advice please. I have a 18 month old (approx) Speckeldy hen who has a dropped wing. I've just got back from a weeks holiday, the lady looking after my flock (28 chucks and 5 ducks) said she noticed no injuries etc...I've taken her to my local avian vet who detected no breaks, possible soft tissue damage or Mareks. She was bought as vaccinated so I hope not. She is now barely eating or drinking...I'm at my wits end now with what to do next. I have a little Silkie with lice so I have today treated all with Ivermectin so if worms are a problem then the ill hen has had that dealt with. She has nasty, foul smelling watery poo now too. Total lack of appetite, not even eating tuna her total favourite, though pecked at a tiny amount of corn..Any hints and tips greatly received x

Recent pic 10 mins ago showing the dropped wing.

 

[Firewood Creek]

Hi there, what happened to your hen? Did she get better? My barred rock is doing the same thing today.

 

[Isaac 0]

Pretty old thread,But I think she probably had mareks

 

[Firewood Creek]

Most threads I have read mention mareks. Not what I wanted to hear