Abstract:The role of vocalisation for the Philippine hornbills' ecology and speciation and their implication in understanding speciation is not well understood. We described and compared recorded calls of seven hornbill taxa in captivity namely Mindanao Wrinkled hornbill (Rhabdotorrhinus
leucocephalus), Rufous-headed hornbill (Rhabdotorrhinus
waldeni), Luzon Rufous hornbill (Buceros
hydrocorax
hydrocorax), Samar Rufous hornbill (Buceros
hydrocorax
semigaleatus), Mindanao Rufous hornbill (Buceros
hydrocorax
mindanensis)… Show more
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