Southern Red-billed Hornbill
Tockus rufirostris
The sexes are similar, but males are larger and heavier. Males also have somewhat longer bills, with the lower mandible coloured black to a variable extent. It is distinguishable from other red-billed hornbills by the combination of yellow iris and pale orbital skin (pink to greyish), and the ample blackish plumage streaking from the ear coverts to the side of the neck. The throat is white, and the wing coverts clearly spotted.
ID text from Wikipedia, CC BY-SA 4.0
Von der Decken's Hornbill
Tockus deckeni
This species is a small hornbill with blackish upperparts and mainly whitish underparts and head. It has a long tail and a long curved bill which lacks a casque. It is similar to the red-billed hornbill except for the bill colour and the lack of spotting on the wing coverts in both male and female. The species shows sexual dimorphism; the female has a black bill, whereas the male has a red bill with a cream tip and a black cutting edge.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
Learn this pair in the BeakBrain App
Photo and call practice. Coming soon to iPhone and Android.
Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Southern Red-billed Hornbill and Von der Decken's Hornbill.