Sunday, December 7, 2008

The Casque of the Tarictic Hornbill is hollow

The Casque of the Tarictic Hornbill is hollow and made of keratin. Penelopides is the genus of relatively small, primarily frugivorous hornbills found in forests of the Philippines and the Indonesian island of Sulawesi. Their common name, tarictic hornbills, is an onomatopoetic reference to the main call of several of them. They have a ridged plate-like structure on the base of their mandible. All are sexually dimorphic, with males of all except the Sulawesi Tarictic Hornbill being whitish-buff and black, while females of all except the Mindoro Tarictic Hornbill are primarily black.

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