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.
| Common name | Binomial name | data-sort-type="number" width="15%" | Population | Status | Trend | Notes | Image |
|---|---|---|---|---|---|---|---|
| Sulu hornbill | Anthracoceros montani | 1 – 49[1] | align=center style="background:#cb3331" | ||||
| Mindoro hornbill | Penelopides mindorensis | 250 - 999[2] | align=center style="background:#cc6402" | ||||
| Narcondam hornbill | Rhyticeros narcondami | 300 - 650[3] | align=center style="background:#cbcc02" | ||||
| Sumba hornbill | Rhyticeros everetti | 1 000 - 2 000[4] | align=center style="background:#cc6402" | ||||
| Walden's hornbill | Rhabdotorrhinus waldeni | 1 000 – 2 499[5] | align=center style="background:#cb3331" | ||||
| Visayan hornbill | Penelopides panini | 1 200[6] | align=center style="background:#cc6402" | ||||
| Plain-pouched hornbill | Rhyticeros subruficollis | 1 500 - 7 000[7] | align=center style="background:#cbcc02" | ||||
| Tickell's brown hornbill | Anorrhinus tickelli | 2 500 - 9 999[8] | align=center style="background:#0097a0" | ||||
| Rufous-necked hornbill | Aceros nipalensis | 7,000 – 10,000[9] | align=center style="background:#cbcc02" | ||||
| Yellow-casqued hornbill | Ceratogymna elata | 8,000 – 9,000[10] | align=center style="background:#cbcc02" | ||||
| Great hornbill | Buceros bicornis | 13 000 - 27 000[11] | align=center style="background:#cbcc02" | ||||
| Palawan hornbill | Anthracoceros marchei | 20 000 - 49 999[12] | align=center style="background:#cbcc02" | ||||
| Eurasian hoopoe | Upupa epops | 5 000 000 – 10 000 000[13] | align=center style="background:#006666" | ||||