This is a list of Bucerotiformes species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.
This list is incomprehensive, as not all Bucerotiformes have had their numbers quantified.
The IOC World Bird List (version 15.1) recognizes 75 species of Bucerotiformes.
This list follows IUCN classifications for species names. Where IUCN classifications differ from other ornithological authorities, alternative names are noted.
Some species listed as members of Bucerotiformes are extinct:
St. Helena hoopoe (Upupa antaios) - went extinct by end of 17th century.
Species by global population Common nameBinomial namePopulationStatusTrendNotesImage Sulu hornbill Anthracoceros montani 1 – 49 Mindoro hornbill Penelopides mindorensis 250 - 999 Narcondam hornbill Rhyticeros narcondami 300 - 650 Sumba hornbill Rhyticeros everetti 1,000 - 2,000 Rufous-headed hornbill (Walden's hornbill)Rhabdotorrhinus waldeni 1,000 - 3,000 Total population is estimated to be 1,500-5,000 individuals. Visayan hornbill Penelopides panini 1,200 Total population is estimated to be at least 1,800 individuals. Note that IOC taxonomy splits an additional species, the Samar hornbill, from this species.
IUCN/BirdLife International maintain both species within P. panini. Plain-pouched hornbill Rhyticeros subruficollis 2,500 - 5,000 Total population is estimated to be, at minimum, 4,000 individuals. Tickell's brown hornbill Anorrhinus tickelli 2,500 - 9,999 Rufous-necked hornbill Aceros nipalensis 7,000 - 10,000 Total population is estimated to be 12,000-15,000 individuals. Malabar pied hornbillAnthracoceros coronatus7,200 - 72,000Best estimate for number of mature individuals is 7,200-25,000. Yellow-casqued hornbill Ceratogymna elata 8,000 - 9,000 Total population has been previously estimated as 12,533 individuals. This may be an underestimate, given the size of remaining suitable habitat. Great hornbill Buceros bicornis 13,000 - 27,000 Total population is estimated (precautionary) to be 23,000 - 71,000 individuals. Palawan hornbill Anthracoceros marchei 20,000 - 49,999 Common hoopoe (Eurasian hoopoe)Upupa epops 5,000,000 - 10,000,000 Values given are for total population.
See also
Lists of birds by population Lists of organisms by population
References