Ficus forstenii fruiting at Sungai Resang, Kinabatangan River in Sabah  on 25 May 2021.

All photos by Helson Hassan of Orangutan and Hornbill conservation NGO, GAIA

New Sabah Times (2019) Hornbill nestboxs Kinabatangan

Ravinder Kaur et al (2018) Helmeted Hornbill nesting Kinabatangan