Kingfishers, Bee-Eaters, Hoopoe and Rollers Hornbills

• Science: Biology: Plants and Animals: Animalia: Chordata: Aves: Coraciiformes 

• AvianWeb: Hornbills  - Index of species, galleries, and article discussing appearance, taxonomy, behaviour, diet and breeding as well as cultural significance and associations with other species.
• Birding India:  - Introduces hornbills and provides pages on local residents.
• Coraciiformes Taxon Advisory Group: Conservation Projects  - Summarises the work of several hornbill conservation groups.
• Hornbills and Ground-Hornbills of the World  - Illustrates thirty of the fifty four species, and includes scientific names and distribution data.
• Hornbills: Bucerotidae  - Introduces the Old World bird and provides several photographs showing their diversity.
• How Hornbills keep Asian Rainforests Healthy and Diverse  - Interview with Shumpei Kitamura, a plant ecologist with a special interest in hornbills and their role as seed dispersers.
• The Internet Bird Collection: Hornbills (Bucerotidae)  - Statistics, and species list with distribution, status, photographs, videos, and sounds.
• On the Matrix: Hornbills  - Relates the incident which sparked the author's further interest in hornbills.