There are currently 75 known species of the Order Bucerotiformes which includes Hoopoes, Scimitarbills, and Hornbills. I have photographed 1 (1.6%) of these species of birds in the family Upupidae.
Family: Upupidae (3 species, including one that is extinct)
–Eurasian Hoopoe (Upupa epops)
Family: Phoeniculidae (8 species – Woodhoopoes, Scimitarbills)
Family: Bucorvidae (2 species – Ground-Hornbills
Family: Bucerotidae (62 species – Hornbills)