With an estimated world population of only 1800
birds, the Visayan Tarictic Hornbill Penolopides panini is probably one of the
rarest hornbills in the world. Already one subspecies, P.panini ticaensis from
the island of Ticao is extinct as a result of deforestation, despite being
describes as “abundant” in 1905, which makes it the first known extinction in historic times of any hornbill taxon. Complicating the picture is that the species
formerly included at least five other closely related species which have since
been split. Unfortunately, before this was realised some had been crossed in
the captive population, resulting in hybrids which were useless from a
conservation point of view.