Beak changing colour!

[chookbookchook]

has anyone come across this at all, We have a red shaver who used to have a golden beak and now its gone dark brown? any advise would be helpful.... should mention she has also stopped laying no eggs for about the last 3 or so weeks..

 

[sumi]

Here are some possible causes:

http://www.avianweb.com/beakdeformities.html