At the beginning he was standing on some ruins o castle and on tle left there were and old tower. Then I've added some sea, then deleted the castle and added fields... In the end even this tower gets deleted In some moment Lucky get changed into white unicorn, but then I've returned to my base idea ^^
The bird is referenced from this photo: [link] (I know it was not stock, but I can't find any better photo of this bird)
you might also want to check out w0lle's gallery [link] I dont think a lot of it is stock either but he has some very excellent shots of various birds of prey!!