Hawk Skull Tattoo Flash by DickStarr.deviantart.com on @deviantART
bird skull by topquarkv.deviantart.com on @deviantART
A collection of anatomy and pose references for artists.
3 Vector Bird Skulls + 3 Gradient Versions - Animals Characters
Flower Frenzy. By Valerie Hegarty, 2012
Nature painting Butterfly wall art Butterfly by mapsandposters
...And allow you to refine your drawings into believable animals.
Vintage print Nature Botanical art Flower print by mapsandposters
Leonardo Da Vinci - Study of Violets