Exact Bird Food by Kaytee. KAYTEE exact is a premium extruded food and has been the recognized nutritional leader by veterinarians and breeders since its introduction over a decade ago. Available for birds and small animals, exact is the most researched and widely used extruded food available. Kaytee Exact Rainbow is a nutritious bird food developed by the nutritional experts at the Kaytee Avian Research Center to provide all the nutrients proven necessary for macaws, cockatoos, all parrots, eclectus, pionus, and large conures.