Eye disease?

I only noticed the odd appearance of the skin below the eye when I looked at the photo. Turkey Vulture on Brier Island, Nova Scotia this weekend. Is this some sort of eye disease? Mites? Fungus?

Thanks,

Richard

Hi Richard...I checked some of my photos of TV's and found some have these same markings...when I get home I'll check some others..not sure what causes this...Paul

Avian pox affects the feet of birds and looks like this. I wonder if this is similar?

Did a bit of online searching, I found this article about Turkey Vultures...it says as vultures get older the develope the white warts...go figure...lol..this bird gets uglier with age...

Check out bottom of this article:

http://vulturesociety.homestead.com/Photos.html