Raptors Unlimited US We recreate bird skeletons to the highest detail anatomically for educational purposes. We specialize in full skeletons, skulls, and various other skeletal structures including sclerotic rings, wings, legs and the hyoid apparatus. Our mission at Raptors Unlimited US is to stop the poaching of protected and endangered birds for parts. We believe strongly that no real animal should ever be used if it is endangered or protected under federal law. NO NATURAL RAPTOR PARTS ARE AVAILABLE ON THIS SITE!