Thank you very much!
Looks like a female nominative subspecies.
Does Walsrode kept in 80. or 90. two other interesting and rare hornbills: Helmeted Hornbill (Rhinoplax vigil) and Plain-pouched Hornbill (Rhyticeros/Aceros subruficollis)?
No, not in the time I worked there. At the zoo-shop there was at that time however a serie of dias for sale on which a Helmeted Hornbill was pictured so they should had have this species at one time.
