Create a great avian adaptation resource with this big 47 piece set of illustrations featuring multiple bird adaptations. The set includes 7 different types of beaks, 7 different types of feet, 4 feet type "casts" (zygodactly anisodactyl, didactyl, and tridactyl), and 4 different feather types (contour (flight), contour (body), filoplume, and down).
The set includes 23 PNG color illustrations, and 24 PNG blackline versions. These are high resolution (300 dpi) transparent background graphics.