There’s no mistaking this fellow. The colour combination he exhibits is typical of the captive specimen of the Normal (Wildtype) Grey: rich plumage white shoulder to tail tip of his primary flight feathers and a bright yellow face and head. The melanin darkens his upper mandible and his feet (not shown) are dark with dark claws.

The following photos are available:

Title	File Size	Download Time (avg)
Normal (Wildtype) Grey	17 Kb	4 secs