| Catalog # | Last Name | First Name | Title of Article | Genus | Category | Subject1 | Subject 2 | Source | Date | Volume | Issue | Pages |
| 401 | Kemp/Joubert/Kemp | A.C./S.C.J./M.I. | Distribution of southern ground hornbills in the Kruger National Park in relation to some environmental factors | Bucorvus | Natural History | Distribution | Kruger National Park | S. Afr. J. Wildl. Res. | 1989 | 19 | 3 | 93-98 |
| 402 | Kemp/Benn/Begg | A.C./G.A./K.S. | Geographical analysis of vegetation structure and sightings for four large bird species in the Kruger National Park, South Africa | Bucorvus | Natural History | Distribution | Kruger National Park | Bird Conservation International | 1998 | 8 | 1 | 89-108 |
| 403 | Belterman/de Boer | R.H.R./L.E.M. | A miscellaneous collection of bird karyotypes | Ceratogymna | Veterinary | Genitourinary | Karyotypes | Genetica | 1990 | 83 | 1 | 17-30 |
| 404 | Hartley | R.R. | Notes on the Breeding Biology, Hunting Behavior, and Ecology of the Taita Falcon in Zimbabwe | Ceratogymna | Natural History | Predation / Breeding | Falcons | J. Raptor Research | 1993 | 27 | 3 | 133-142 |
| 405 | Holbrook/Smith | Kimberly M./Thomas B. | Seed dispersal and movement patterns in two species of Ceratogymna hornbills in a West African tropical lowland forest | Ceratogymna | Natural History | Ecology | Rainforest | Oecologia | 2000 | 125 | 2 | 249-257 |
| 406 | Whitney | Kenneth | Seed dispersal by Ceratogymna hornbills in the Dja Reserve, Cameroon | Ceratogymna | Natural History | Ecology | Dja Reserve | J. Tropical Ecol. | 1998 | 14 | 3 | 351-371 |
| 407 | Bennett/Earle/Squires-Parsons | G.F./R.A./Deborah | Additional new species of Haemoproteus, Hepatozoon and Leucocytozoon from South African birds | Tockus | Natural History | Distribution | South Africa | South African Journal of Wildlife Research | 1995 | 25 | 1 | 1-7 |
| 408 | Robel | Detlef | Records of the Grey Hornbill (Tockus nasutus), Crimson-rumped Waxbill (Estrilda rhodopyga) and African Silverbill (Lonchura cantans) in Egypt | Tockus | Natural History | Distribution | Egypt | Zoology in the Middle East | 1997 | 150 | 0 | 33-35 |
| 409 | Robertson/Simmons/Jarvis/Brown | A./R.E./A.M./C.J. | Can bird atlas data be used to estimate population size? A case study using nambian endemics | Tockus | Natural History | Distribution | South Africa | Biological Conservation | 1995 | 71 | 1 | 87-95 |
| 410 | Zeller/Cornet/Camicas | Herve G./Jean-Paul/Jean-Louis | Experimental Transmission of Crimean-Congo Hemorrhagic Fever Virus by West African Wild Ground-Feeding Birds to Hyalomma Marginatum Rufipes Ticks | Tockus | Veterinary | Parasitology | Ticks | Am. J. Tropical Medicine & Hygene | 1994 | 50 | 6 | 676-681 |
| 411 | Zeller/Cornet/Camicas | Herve G./Jean-Paul/Jean-Louis | Crimean-Congo haemorrhagic fever virus infection in birds: field investigations in Senegal | Tockus | Veterinary | Parasitology | Ticks | Research in Virology | 1994 | 145 | 2 | 105-109 |
| 412 | Kaneene/Taylor/Sikarskie/Meyer/Richter | John B./R. Flint/James G./Teresa J./Nadine A. | Disease patterns in the Detroit Zoo: a study of the avian population from 1973 through 1983 | Tockus | Veterinary | Parasitology | Microbial agents | JAVMA | 1985 | 187 | 11 | 1129-1131 |
| 413 | Wadsworth/Jones | P.F./D.M. | An adenoma of the large intestine in a Black Casqued Hornbill | Ceratogymna | Veterinary | Carcinoma | Gastrointestinal | Avain Pathology | 1980 | 9 | 1 | 39-43 |
| 414 | Martin | Phyllis K. | Captive breeding and rearing of Red Billed Dwarf Hornbills | Tockus | Veterinary | Captive Management | Breeding, Hand-rearing | American Federation Aviculture: Watchbird | 1982 | 9 | 3 | 33-36 |
| 415 | Borello/Borello | Wendy/Remi | Aggregation of Bradfield's hornbill tokus bradfieldi in Northeastern Botswana | Tockus | Natural History | Distribution | Botswana | Babbler | 1994 | 28 | 0 | 15 |
| 416 | Anderson | D. | Black and white casqued hornbill hatches at the San Francisco Zoo | Bycanistes | Veterinary | Captive Management | Reproduction | A.A.Z.P.A. Communique | 1992 | 0 | 0 | 18 |
| 417 | Boix-Hinzen/Stanback/Mendelsohn | Christian/Mark/John | Plugging the gap: monitoring monteiro's hornbills | Tockus | Natural History | Behavior | Reproduction | African Birds Birding | 2000 | 5 | 1 | 56-59 |
| 418 | Ellis | Malcolm | Jackson's hornbill tockus jacksoni | Tockus | Natural History | Behavior | Hand-rearing | The Avicultural Magazine | 1976 | 82 | 2 | 69-72 |
| 419 | Bourne/Chessell | D./D. | Breeding the black and white casqued hornbill bycanistes subcylindricussubquadratus at the metro toronto zoo, canada | Ceratogymna | Veterinary | Captive Management | Breeding | The Avicultural Magazine | 1982 | 88 | 1 | 15-25 |
| 420 | Anonomous | Trumpeter hornbill and sand cats born at de granby | Bycanistes | Veterinary | Captive Management | Breeding | AZA Communique | 1995 | 0 | 0 | 12 | |
| 421 | Abdulali | Humayun | On the occurrence of the common grey hornbill tockus birostris (scopoli) near bombay | Tockus | Natural History | Geographic Location | India | Journal of the Bombay Natural History Society | 1974 | 71 | 1 | 147 |
| 422 | Anonomous | Report of zoo breeding of bycanistes subcylindricus, birdworld, farnham | Bycanistes | Veterinary | Captive Management | Breeding | Animals, The International Wildlife Magazine | 1975 | 17 | 219 | ||
| 423 | Anonomous | Crowned hornbills irrupt again | Tockus | Natural History | Geographic Location | East Africa | Bee-eater | 1982b | 33 | 0 | 24 | |
| 424 | Anonomous | Some notes on birds in the kumagan area, botletle river, botswana | Tockus | Natural History | Geographic Location | Botswana | The Honeyguide: The Magazine of the Rhodesian Ornithological Society | 1968 | 0 | 54 | 24-26 | |
| 425 | Aspinwall | D.R. | The silvery-cheeked hornbill (bycanistes brevis) in zambia | Bycanistes | Natural History | Geographic Location | Zambia | Bulletin of the Zambian Ornithological Society | 1977 | 9 | 1 | 23-25 |
| 426 | Baird | R.F. | Avian fossils from quaternary deposits in 'green waterhole cave,' south-eastern south australia | Bucorvus | Natural History | Palaeontology | Australia | Records of the Australian Museum | 1985 | 37 | 5-6 | 353-370 |
| 427 | Becker | Von E. | Schnabelschienung bei afrikanischen hornaben | Veterinary | Captive Management | Casque Surgery | Der Praktische Tierarzt | 1974 | 55 | 9 | 492-494 | |
| 428 | Behm | Lisa L. | Sloth/feline/birds/arboreal animals | Tockus | Veterinary | Captive Management | Enrichment | Animal Keepers Forum | 1998 | 25 | 12 | 469-470 |
| 429 | Behr | M.G. | Another cliff nest | Bucorvus | Natural History | Behavior | Nesting | Lammergeyer | 1970 | 11 | 0 | 83-84 |
| 430 | Beasley | A.J. | Grey hornbill attempting to rob weaver nests | Tockus | Natural History | Behavior | Predation | The Honeyguide: The Magazine of the Rhodesian Ornithological Society | 1985 | 31 | 0 | 57 |
| 431 | Biggs/Webb | Duan/Janet | Wild dog picnic for birds | Tockus | Natural History | Behavior | Feeding | Africa - Birds & Birding | 1999 | 4 | 1 | 32 |
| 432 | Bohmke | B.W. | St. Louis zoo reports trumpeter hornbill hatching | Bycanistes | Veterinary | Captive Management | Breeding | AAZPA Communique | 1993 | 0 | 0 | 17 |
| 433 | Bolster | R.C. | Habits of the crowned hornbill (lophoceros melanoleucus, no. 428, fauna of s. africa) | Tockus | Natural History | Behavior | Feeding | Ostrich | 1930 | 1 | 0 | 69-70 |
| 434 | Bourne/Chessell | Duncan/Douglas | Breeding the black and white casqued hornbill at the metro toronto zoo | Bycanistes | Veterinary | Captive Management | Breeding | AAZPA Regional Proceedings | 1982 | 0 | 0 | 163-171 |
| 435 | Brass | D. | Bendera birds | Multiple | Natural History | Behavior | Predation | Bulletin of the East African Natural History Society | 1983 | 0 | 0 | 74 |
| 436 | Breitwisch | Randall | Frugivores at a fruiting ficus vine in Southern Cameroon tropical wet forest | Bycanistes | Natural History | Behavior | Feeding | Biotropica | 1983 | 15 | 2 | 125-128 |
| 437 | Pickrell | John | African birds understand monkey communication, study says | Ceratogymna | Natural History | Behavior | Protection | National Geographic News (nationalgeographic.com) | 3/24/2003 | 0 | 0 | 1-6 |
| 438 | Breitwisch | Randall | Allopreening by the yellow-casqued hornbill ceratogymna elata | Ceratogymna | Natural History | Behavior | Preening | Bulletin of the British Ornithological Club | 1979 | 99 | 3 | 114 |
| 439 | Brooke/Kemp | R.K./A.C. | Specimen data on bucorvus leadbeateri | Bucorvus | Natural History | Behavior | Moulting | Bulletin of the British Ornithological Club | 1973 | 93 | 2 | 89-92 |
| 440 | Brooke | R.K. | Speed of a S.A. Grey Hornbill Lophoceros nasutus | Lophoceros | Natural History | Behavior | Flight Speed | Ostrich | 1956 | 27 | 0 | 184 |
| 441 | Brooke | R.K. | South African scientific programme report no. 97 | Bucorvus | Natural History | Distribution | South Africa | The South African Red Data Book for Birds | 1984 | 0 | 0 | 6-14, 138-139 |
| 442 | Brown | L.H. | Breeding records of hemprich's hornbill tockus hemprichii in tigrai, ethiopia | Tockus | Natural History | Behavior | Nesting | Bulletin of the British Ornithological Club | 1976 | 96 | 3 | 81-82 |
| 443 | Chadwick | Peter | Bradfield's hornbill in bulawayo | Tockus | Natural History | Geographic Location | Zimbabwe | Honeyguide | 1984 | 30 | 3-4 | 125 |
| 444 | Clancy | P.A. | Miscellaneous taconomic notes on african birds XXI | Tockus | Natural History | Geographic Location | South Africa | Durban Museum Novitates | 1964 | 7 | 0 | 125-140 |
| 445 | Clancy | P.A. | Notes on variation in the south african populations of the yellow-billed hornbill tockus flavirostris (ruppell), with the characters of a new race | Tockus | Natural History | Behavior | Size | Durban Museum Novitates | 1959 | 5 | 0 | 238-242 |
| 446 | Corburn | John | Captive breeding of red-billed hornbills (tockus erythrorhynchus) at cotswold wild life park | Tockus | Veterinary | Captive Management | Breeding | International Zoo News | 1978 | 25 | 2 | 14-17 |
| 447 | Courtnay-Latimer | M. | The ground hornbill (bucorvus cafer) | Bucorvus | Natural History | Behavior | Nesting | Ostrich | 1942 | 13 | 3 | 121-136 |
| 448 | Crowe/Kemp | T.M./A.C. | African historical biogeography as reflected by galliform and hornbill evolution | Multiple | Natural History | Distribution | Africa | International Ornithological Congress Programme | 1988 | 19 | 0 | 2510-2518 |
| 449 | Cunningham-van Someren | G.R. | Some observations on a captive grey hornbill tockus nasutus | Tockus | Veterinary | Captive Management | Behavior | Scopus | 1977 | 1 | 0 | 52-53 |
| 450 | du Plessis | Morne A. | Cooperative breeding in the trumpeter hornbill bycanistes bucinator | Multiple | Natural History | Behavior | Breeding | Ostrich | 1994 | 65 | 1 | 45-47 |
| 451 | de Ruiter | Maarten | Breeding the trumpter hornbill: an overview | Bycanistes | Veterinary | Captive Management | Breeding | International Zoo News | 1996 | 43 | 2 | 107-109 |
| 452 | Diop | Moussa Sega | Nichoirs artificiels utilises par le petit calao a bec rouge tockus erythrorhynchus | Tockus | Veterinary | Captive Management | Breeding | Malimbus | 1993 | 15 | 2 | 81-88 |
| 453 | Dixon | J.E.W. | Prey of large raptors | Tockus | Natural History | Behavior | Prey | Ostrich | 1968 | 39 | 0 | 203-204 |
| 454 | Durfey | Frank D. | Silvery-cheeked hornbills congregated in large numbers | Bycanistes | Natural History | Geographic Location | Africa | EANHS Bulletin | 1978 | 0 | 0 | 85 |
| 455 | Elbel | Robert E. | Buceroemersonia, a new genus of ischnoceran mallophaga found on the hornbill genus tockus (bucerotidae) | Tockus | Natural History | Evolution | Species | Biological Society of Washington, Proceedings | 1977 | 90 | 4 | 798-807 |
| 456 | Ellenberger | Peter M. | S.A. Ground Hornbill | Bucorvus | Natural History | Geographic Location | Botswana | Ostrich | 1947 | 18 | 0 | 114 |
| 457 | Elliot | C.C.H. | An ornithological survey of the kidepo national park, northern uganda | Tockus | Natural History | Geographic Location | Uganda | Journal of the East Africa Natural History Society and National Museum | 1972 | 28 | 129 | 1-31 |
| 458 | Elliot | Malcolm | Letter to the editor | Tockus | Natural History | Description | Features | The Avicultural Magazine | 1993 | 99 | 4 | 213-214 |
| 459 | Ellis | Malcolm | Von der decken's and jackson's hornbills: two species or one? | Tockus | Natural History | Description | Features | The Avicultural Magazine | 1993 | 99 | 1 | 9-11 |
| 460 | Gardner | Laura | The first UK breeding of the crowned hornbill tockus alboterminatus at leed's castle | Tockus | Veterinary | Captive Management | Breeding | The Avicultural Magazine | 1998 | 104 | 2 | 61-64 |
| 461 | Hegner | Robert E. | Group dispersal in hemprich's hornbill tockus hemprichii | Tockus | Natural History | Behavior | Group Dispersal | Scopus | 1980 | 4 | 3 | 67-68 |
| 462 | Hinzen | Christian Boix | Notes on misdirected feeding behavior | Tockus | Natural History | Behavior | Feeding | Lanioturdus | 1997 | 30 | 4 | 26-28 |
| 463 | Jarvis/Robertson | Alice/Tony | Namibia's inland endemics | Tockus | Natural History | Geographic Location | Namibia | African Birds Birding | 1999 | 4 | 2 | 50-56 |
| 464 | Kalina | Jan | Nest intruders, nest defense and foraging behaviour in the black-and-white casqued hornbill bycanistes subcylindricus | Bycanistes | Natural History | Behavior | Nest Defense/Foraging | Ibis | 1989 | 131 | 4 | 567-571 |
| 465 | Kemp/Kemp | Alan C./Meg I. | Timing of egglaying by southern ground hornbills bucorvus leadbeateri in the central kruger national park, south africa | Bucorvus | Natural History | Behavior | Egg Laying | Ostrich | 1991 | 62 | 1-2 | 80-82 |
| 466 | Kemp/Kemp | A.C./M.I. | The biology of the southern ground hornbill bucorvus leadbeateri (vigors) (aves: bucerotidae) | Bucorvus | Natural History | Behavior | Description | Annals of the Transvaal Museum | 1980 | 32 | 4 | 65-100 |
| 467 | Lewis | Adrian | The trumpeter hornbill bycanistes bucinator in Nairobi | Bycanistes | Natural History | Geographic Location | Kenya | Scopus | 1982 | 6 | 4 | 102-103 |
| 468 | Marais | Eugene R. | Captive breeding project for the southern ground hornbill at the national zoological gardens (bucorvus cafer) | Bucorvus | Veterinary | Captive Management | Breeding | AFA Birdwatch | 1993 | 20 | 1 | 8-10 |
| 469 | Marchand/Vassiliades | Bernard/Georges | Mediorhynchus mattei sp.n. (acanthocephala, giganthorhynchidae) from tockus erythrorhynchus (aves), the red-beaked hornbill, in west africa | Tockus | Veterinary | Parasitology | Hookworm | Journal of Parasitology | 1982 | 68 | 6 | 1142-1145 |
| 470 | McCormick/Aviary | Heather/Tracy | Reproduction of an imprinted southern ground hornbill at tracy aviary | Bucorvus | Veterinary | Captive Management | Breeding | Animal Keepers Forum | 2000 | 27 | 2 | 74-75 |
| 471 | Mendelsohn | John | Namibian hornbills in nest boxes | Tockus | Natural History | Behavior | Nesting | Lanioturdus | 1997 | 30 | 4 | 22-26 |
| 472 | Msowoya | L.P. | Bird records from Vwaza Marsh Wildlife Reserve | Tockus | Natural History | Geographic Location | Malawi | Nyala | 1996 | 0 | 19 | 54 |
| 473 | Pithart/Pithartova/Jiraskova | Karel/Anna/Alena | Hand rearing of the southern ground hornbill (bucorvus leadbeateri) at Prague zoo | Bucorvus | Veterinary | Captive Management | Breeding/Hand-rearing | Gazella | 1995 | 22 | 0 | 76-83 |
| 474 | Pomeroy/Tengecho | D.E./B. | Probable breeding of trumpter hornbills in tsavo west national park | Bycanistes | Natural History | Behavior | Breeding | EANHS Bulletin | 1980 | 0 | 0 | 91 |
| 475 | Randolph/Gern/Nuttall | S.E./L./P.A. | Co-feeding ticks: epidemiological significance for tick-borne pathogen transmission | Tockus | Veterinary | Parasitology | Ticks | Parasitology Today | 1996 | 12 | 12 | 472-479 |
| 477 | Diop/Treca | Moussa Sega/Bernard | Distribution of nest preparation tasks between mates of the redbilled hornbill tockus erythrorhynchus | Tockus | Natural History | Behavior | Nesting | Ostrich | 1996 | 67 | 2 | 55-59 |
| 478 | Seidal/Straub/Minnemann | Von B./G./D. | Experience from use of endoscopy for sexing of birds | Tockus | Veterinary | Endoscopy | Sexing | Monatshefte Fur Veterinaermedizin | 1986 | 41 | 3 | 91-95 |
| 479 | Toffic | Gregory S. | Development of the captive raised abyssinian ground hornbill | Bucorvus | Veterinary | Captive Management | Growth/Development | AAZPA Annual Proceedings | 1985 | 0 | 0 | 241-249 |
| 480 | Tramontana/Rider | Renata/Pat | Captive breeding program of the southern ground hornbill (bucorvus leadbeateri) at jacksonville zoological park | Bucorvus | Veterinary | Captive Management | Breeding | AAZPA Regional Proceedings | 1988 | 0 | 0 | 476-482 |
| 481 | Van der Linde | Elsje | Our grand finale - crowned hornbills (460) in the karoo | Tockus | Natural History | Geographic Location | South Africa | Promerops | 1992 | 0 | 206 | 6 |
| 482 | Vernon/Herremans | C.J./M. | Ground hornbill bucorvus leadbeateri | Bucorvus | Natural History | Ecology | South Africa | The atlas of southern african birds | 1997 | 1 | 0 | 708-709 |
| 483 | Baker/Allen | W.J./P.B. | Silvery-cheeked hornbills | Bycanistes | Natural History | Geographic Location | Kenya | Bulletin of the East African Natural History Society | 1978 | May/June | 0 | 56-58 |
| 484 | Vernon | Carl | Notes from the border: trumpeter hornbill raids sunbird's nest | Bycanistes | Natural History | Behavior | Predation | Bee-eater | 1991 | 42 | 2 | 28 |
| 485 | Williams | Andrew | Notes on tockus hornbills breeding at lake baringo, kenya | Tockus | Natural History | Behavior | Breeding | Scopus | 1978 | 2 | 1 | 21-23 |
| 486 | Bourne/Chessell | Duncan/Douglas | Breeding the black and white casqued hornbill at the metro toronto zoo | Bycanistes | Veterinary | Captive Management | Breeding | Animal Keepers Forum | 1982 | 9 | 12 | 353-361 |
| 487 | Elliot | D.G. | XXI. - On an apparently new species of hornbill from angola | Bycanistes | Natural History | Taxonomy | Description | Ibis | 1873 | 3 | 3 | 177-179 |
| 488 | Paterson | Laura | Breeding the von der decken's hornbill at leeds castle, maidstone, kent in 1990 | Tockus | Natural History | Captive Management | Breeding | Avicultural Magazine; The Journal of the Avicultural Society | 1992 | 98 | 2 | 44-47 |
| 489 | Yoon | Carol Kaesuk | Amid jungle cacophony, hornbills heed monkeys' alarms | Multiple | Natural History | Behavior | Eavesdropping | The New York Times | 2004 | May 11 | D2 | |
| 490 | Moynihan | M. | An <ad hoc> association of hornbills, starlings, councils, and other birds | Tockus | Natural History | Behavior | Association | Revue D'Ecologie La Terre Et La Vie | 1978 | 32 | 4 | 557-576 |
| 491 | Jensch/Ellenberg | Doris/Hermann | The seed dispersal and indicator role of the hornbill tockus semifasciatus and the rehabilitation of forests of the eastern ivory coast | Tockus | Natural History | Behavior | Seed Dispersal | Revue D'Ecologie La Terre Et La Vie | 1999 | 54 | 4 | 333-350 |
| 492 | Heston | John | Hand rearing southern yellow-billed hornbills | Tockus | Natural History | Captive Management | Breeding/Hand-rearing | American Federation Aviculture: Watchbird | 1983 | 10 | 4 | 26-29 |
| 493 | Gregson | Jo | Incubation and hand rearing of abyssinian ground hornbill | Bucorvus | Veterinary | Captive Management | Breeding/Hand-rearing | Avicultural Magazine; The Journal of the Avicultural Society | 1994 | 100 | 4 | 221-223 |
| 494 | Cockburn | T.A. | Some birds of the gold coast, with observations on their virus and parasitic infections | Tockus | Veterinary | Parasitology/Virology | Africa | Ibis | 1946 | 88 | 387-394 | |
| 495 | Martin/Coetzee | Graham R./Hendri C. | Visual fields in hornbills: precision-grasping and sunshades | Mixed | Veterinary | Vision | Retinal visual fields | Ibis | 2004 | 146 | 18-26 | |
| 496 | Marin/Matesanz | Andres/Ana | Some notes on the piping hornbills at guinate tropical park, lanzarote | Ceratogymna | Veterinary | Captive Management | Behavior | Avicultural Magazine; The Journal of the Avicultural Society | 1999 | 105 | 3 | 97-102 |
| 497 | Kemp | Alan C. | The behavioural ecology of the southern ground hornbill: are competitive offspring at a premium? | Bucorvus | Natural History | Behavior | Territoriality | Proc Inter Centennial Meeting of the Deutsche Ornithologen Gesellschaft | 1990 | 267-271 | ||
| 498 | Choppard | L. | La curieuse nidification des calaos | Bycanistes | Natural History | Behavior | Nesting | Nature Paris | 1957 | 3275 | 98-99 | |
| 499 | Delport/Kemp/Ferguson | Wayne/Alan C./J. Willem H. | Structure of an african red-billed hornbill (tockus erythrorhynchus rufirostris and t.e. damarensis) hybrid zone as revealed by morphology, behavior, and breeding biology | Tockus | Natural History | Distribution | Biology | The Auk | 2004 | 121 | 2 | 565-586 |
| 401A | Blanca/de Visscher | Gilles/Marie-Noel | Nouvelles donnees de distribution pour deux especes d'oiseaux au Burkina Faso | Bucorvus | Natural History | Distribution | Burkina Faso | Malimbus | 1993 | 15 | 2 | 89-90 |
| 402A | Barberton | Eddie Harris | Hornbills of the Lowveld | Multiple | Natural History | Geographic Location | South Africa | Hornbill | 1995 | 40 | 0 | 9-12 |
| 403A | Campbell | Hamish | Vernon crookes birds | Ceratogymna | Natural History | Geographic Location | South Africa | Albatross | 1995 | 321 | 0 | 14-16 |
| 404A | Cowles | Raymond B. | The nesting habits of the crowned hornbill, lophoceros melanoleucus L. | Lophoceros | Natural History | Behavior | Nesting | South African Journal of Natural History | 1926 | 6 | 20-24 | |
| 405A | Dean | W.R.J | The avifauna of angolan miombo woodlands | Tockus | Natural History | Distribution | Angola | Tauraco | 1988 | 1 | 99-104 | |
| 406A | Chapin | J.P. | Les calaos congolais | Multiple | Natural History | Distribution | Congo | Bulletin of Cercle Zoologique Congolais | 1926 | 3 | 9-20 | |
| 407A | Dowsett-Lemaire | F. | Ecological and biogeographical aspects of forest bird communities in malawi | Multiple | Natural History | Geographic Location | Malawi | Scopus | 1989 | 13 | 1 | 28-29 |
| 408A | Mills/Boix-Hinzen/Du Plessis | Michael S./Christian/Morne A. | Live and let live: life-history decisions of the breeding female monteiro's hornbill tockus monteiri | Tockus | Natural History | Behavior | Nest departure | Ibis | 2005 | 147 | 48-56 | |
| 409A | Anonomous | Seltener zuchterfolg beim helm-nashorvogel | Bycanistes | Natural History | Geographic Location | Berlin zoo | Gefiederte Welt | 1978 | 102 | 1 | 20 | |
| 410A | Cockburn | Major T.A. | Some birds of the gold coast, with observations on their virus and parasitic infections | ????? | ????? | |||||||
| 411A | Tarboton | W.R. | ????? (not given) | Multiple | Natural History | Geographic Location | South Africa | Birds of the Transvasl, Transvaal Museum, Pretoria | 1987 | 0 | 0 | 152-154 |
| 412A | Darnton | Iris | Hen hornbill uses mud | Tockus | Natural History | Behavior | Nesting | Lorus | 1964 | 10 | 1 | 47-48 |
| 413A | Allen | P.M. | Carnivorous habits of hornbills | East African Natural History Soceity Bulletin | 1978 | 84-85 | ||||||
| 414A | Babich | K. | Ground hornbills (R430) | Witwatersrand Bird Club News | 1983 | 123 | 15 | |||||
| 415A | Zeller/Cornet/Camicas | H.G./J.P./J.L. | Experimental Transmission of Crimean-Congo Hemorrhagic Fever Virus by West African Wild Ground-Feeding Birds to Hyalomma Marginatum Rufipes Ticks | Tockus | Veterinary | Parasitology | Ticks | Am. J. Tropical Medicine & Hygene | 1992 | 47 | 243-244 | |
| Blue - is 403 for african birds or hornbills in general? | ||||||||||||
| Green - questionable - hornbill or cockatoo? | ||||||||||||
| 427 - genus? | ||||||||||||
| PEACH | need to acquire - refer to reference list from Alan Kemp book | |||||||||||
| ** RED - foreign language articles | ||||||||||||
| 410A | article information? | |||||||||||
| 411A | title of article? | |||||||||||