Wobbling head

[Bluesilkies]

Hey everyone, I have a 3.5 month old Silkie. Her growth has slowed right down and is now much smaller than her siblings. Most concerning though, is when she is sleeping she has a head wobble. Seems to be eating and drinking ok and mobility and movement when awake seems fine.
All others in the flock are healthy.
What could be going on?

 

[ThisChickenGirl]

I'm sorry, I'm not very experienced so I can't help, but I hope you find out what's going on!

 

[Bluesilkies]

I'm sorry, I'm not very experienced so I can't help, but I hope you find out what's going on!

I just really hope this isn’t a sign of Mareks disease

 

[Bluesilkies]

Anyone?

 

[Bluesilkies]

If this is Mareks, does anyone know how long it takes for the chicken to die? Is it fast or could it take weeks?

 

[Bluesilkies]

So she had been in isolation for a week and I was starting to believe it was malnutrition. She is the smallest and possibly wasting getting to the food. The wobbly head thing did go away. However, my young son was holding her while I cleaned her cage and accidentally put her down. She very quickly escaped to under the house but she was very wobbly on her legs as she went.
I’ve had birds in isolation for a week and not had walking issues after, and this on is very small so plenty of room to walk around in the cage.
I have a suspicion I won’t see her again.