Rose-breasted Cockatoo
Leadbetter's Cockatoo
Hyacinth Macaw
Vulture
Marks sent these vultures to John Ruskin, who was delighted with them: 'I jumped all about the room when I got your letter. I've been gloating like a good vulture over those vultures ever since I got them, and have got wilder and wilder about them every day; and I'm just going to show them in my lecture here on Tuesday as examples of true natural history drawing.'
From here: http://www.ruskinatwalkley.org/object.php?hotspots=on&room=4&object=44
