Ardiantiono et al.

Hornbill density estimates and fruit availability in a lowland tropical rainforest site of Leuser Landscape, Indonesia: preliminary data towards long-term monitoring

Kinnaird & G. O’Brien

Genetic monogamy in Von der Decken’s and Northern Red-billed hornbills

Sibarani et al.

Long-term monitoring of nesting behavior and nesting habitat of four sympatric hornbill species in a Sumatran lowland tropical rainforest of Bukit Barisan Selatan National Park

Chan

Sighting records of hornbills in western Brunei Darussalam

Chittenden

Trumpeter hornbill (Bycanistes bucinator) bill colouration

Kinley et al.

Nest cavity availability determines breeding in hornbills: Rufous-necked hornbill nest at breast height in Bhutan

Zheng at al.

Flocking of hornbills observed in Tongbiguan Nature Reserve, Yunnan, China

Jain & Lee

Update from the Helmeted Hornbill Working Group

Datta & Kemp

IUCN HSG Update and Activities