I have found an article of hornbills which includes where first breedings took place know a certain person that might be interested GROUND HORNBILLS northern ground hornbill - bucorvus abyssinicus - Basel zoo 1953 southern ground hornbill - bucorvus leadbeateri - jacksonville zoo 1980 TOCKUS african crowned hornbill - tockus alboterminatus - houston zoo 1993 african grey hornbill - tockus nasutus - walsrode - 1981 red billed hornbill - tockus erythrorhynchus - frankfurt zoo & berlin zoo 1926 (the first hornbill species to breed in any zoo) eastern yellow billed hornbill - tockus flavirostris - kitakyushu zoo, japan 1984 southern yellow billed hornbill - tockus leucomelas - bloemfontein zoo, south africa 1961 von der deckens hornbill - tockus deckeni deckeni - winnipeg zoo 1976 jacksons hornbill - tockus deckeni jacksoni - london zoo 1974 ANTHRACOCEROS malay black hornbill - anthracoceros malayanus - jurong bird park 1992 indian pied hornbill - anthracoceros coronatus - honolulu zoo 1953 asian pied hornbill - anthrcoceros albirostris albirostris - woodland park zoo, seattle 1972 sunda pied hornbill - anthracoceros albirostris convexus - chessington & beauval 1992 BUCEROS great indian hornbill - buceros bicornis - honolulu zoo 1968 javan rhinoceros hornbill - buceros rhinoceros - audubon park, new orleans 1988 bornean rhinoceros hornbill - buceros rhinoceros ornis breeding centre, majorca 1993 rufous hornbill - buceros hydrocorax - jurong bird park 1996 PENELOPIDES south sulawesi tarictic hornbill - penelopides exarhatus sanfodi - san diego wild animal park 1993 visayan tarictic hornbill - penelopides panini - bacolod breeding centre, negros 2000 luzon tarictic hornbill - penelopides manillae - san diego zoo 1983 samar tarictic hornbill - penelopides affinis samarensis - san diego zoo 1993 ACEROS white crowned hornbill - aceros comatus - ornis breeding centre majorca 1993 sulawesi wrinkled hornbill - aceros cassidix - ornis breeding centre, majorca 1991 sunda wrinkled hornbill - aceros corrugatus - audubon park, new orleans 1988 blyths hornbill - aceros plicatus - rotterdam zoo, sandiego zoo & cricket st thomas wp, uk 1994 wreathed hornbill - aceros undulatus - bronx zoo 1977 writhe billed hornbill - aceros leucocephalus - miami metrozoo 1989 CERATOGYMNA trumpeter hornbill - ceratogymna bucinator - natal zoo, south africa 1970 grey cheeked hornbill - ceratogymna subcylindricus - birdworld, uk 1972 silvery cheeked hornbill - ceratogymna brevis - ornis breeding centre, majorca 1991.
