All images were generated by me from a txt2img base, and most had some iterative img2img/inpainting/manual guidance steps. Very small blemishes in AI images were removed in a minute or two with a smudge brush or color correction tool.
Answers and attributions follow:
1. ||AI—Suit blends into his chest feathers.|| 2. ||AI—Chest fluff doesn't make a ton of sense, weird blush.|| 3. ||Human, by megalura—https://derpibooru.org/images/2962258|| 4. ||Human, by sinrinf—https://derpibooru.org/images/2955550|| 5. ||AI—Linework on bangs fluff is strange and melty-looking.|| 6. ||Human, from Black Butler manga.|| 7. ||Human, by Corpse Wizard—https://mobile.twitter.com/horsewizardart/status/1572006417946779648|| 8. ||Human, by Renato ForFun—https://twitter.com/herbertvanhuber/status/1034598208549384192|| 9. ||Human, by Ian Moore—https://www.artstation.com/artwork/Po4xr1|| 10. ||Human, by baselarder—https://www.deviantart.com/baselarder/art/Belarus-Leatherdadddy-Walrus-743422449||