Foreword introducing the HBW project by Christoph Imboden.

Class AVES Eduardo de Juana
Order STRUTHIONIFORMES:
Family Struthionidae (Ostrich) Anna Folch
Family Rheidae (Rheas) Anna Folch
Family Casuariidae (Cassowaries) Anna Folch
Family Dromaiidae (Emu) Anna Folch
Family Apterygidae (Kiwis) Anna Folch

Order TINAMIFORMES:
Family Tinamidae (Tinamous) José Cabot

Order SPHENISCIFORMES:
Family Spheniscidae (Penguins) Isabel Martínez

Order GAVIIFORMES:
Family Gaviidae (Divers) Carles Carboneras

Order PODICIPEDIFORMES:
Family Podicipedidae (Grebes) Francesc Llimona & Josep del Hoyo

Order PROCELLARIIFORMES:
Family Diomedeidae (Albatrosses) Carles Carboneras
Family Procellariidae (Petrels and Shearwaters) Carles Carboneras
Family Hydrobatidae (Storm-petrels) Carles Carboneras
Family Pelecanoididae (Diving-petrels) Carles Carboneras

Order PELECANIFORMES:
Family Phaethontidae (Tropicbirds) Jaume Orta
Family Pelecanidae (Pelicans) Andrew Elliott
Family Sulidae (Gannets and Boobies) Carles Carboneras
Family Phalacrocoracidae (Cormorants) Jaume Orta
Family Anhingidae (Darters) Jaume Orta
Family Fregatidae (Frigatebirds) Jaume Orta

Order CICONIIFORMES:
Family Ardeidae (Herons) Albert Martínez-Vilalta & Anna Motis
Family Scopidae (Hamerkop) Andrew Elliott
Family Ciconiidae (Storks) Andrew Elliott
Family Balaencipitidae (Shoebill) Andrew Elliott
Family Threskiornithidae (Ibises and Spoonbills) Eloïsa Matheu & Josep del Hoyo

Order PHOENICOPTERIFORMES:
Family Phoenicopteridae (Flamingos) Josep del Hoyo

Order ANSERIFORMES:
Family Anhimidae (Screamers) Carles Carboneras
Family Anatidae (Ducks, geese and Swans) Carles Carboneras

* 14 anatomical colour plates
* 50 colour plates of birds
* 382 colour photographs
* 568 distribution maps
* more than 6000 bibliographical references

Foreword on extinct birds by Errol Fullery

Order GALBULIFORMES:
Family Galbulidae (Jacamars) J. Tobias, T. Züchner & Tadeu Artur de Melo Júnior
Family Bucconidae (Puffbirds) P. Rasmussen & N. Collar
Order PICIFORMES
Family Capitonidae (Barbets) J. Horne & L. Short
Family Ramphastidae (Toucans) L. Short & J. Horne
Family Indicatoridae (Honeyguides) L. Short & J. Horne
Family Picidae (Woodpeckers) H. Winkler & D. Christie

* 70 colour plates
* 317 photographs
* 408 distribution maps
* c. 4000 bibliographical references

Foreword on avian bioacoustics by Luis Baptista & Don Kroodsma

Order COLIIFORMES:
Family Coliidae (Mousebirds) E. de Juana

Order TROGONIFORMES:
Family Trogonidae (Trogons) N. J. Collar

Order CORACIIFORMES:
Family Alcedinidae (Kingfishers) P. Woodall
Family Todidae (Todies) A. K. Kepler
Family Momotidae (Motmots) D. Snow
Family Meropidae (Bee-eaters) C. H. Fry
Family Coraciidae (Rollers) C. H. Fry
Family Brachypteraciidae (Ground-rollers) O. Langrand
Family Leptosomidae (Cuckoo-rollers) S. Goodman
Family Upupidae (Hoopoes) A. Kristin
Family Phoeniculidae (Wood-hoopoes) D. Ligon
Family Bucerotidae (Hornbills) A. C. Kemp

* 45 colour plates
* 385 photographs
* 270 distribution maps
* 11 figures and tables
* c. 6000 bibliographical references

Foreword on risk indicators and status assessment in birds by Nigel J. Collar

Order STRIGIFORMES:
Family Tytonidae (Barn-owls) M. D. Bruce
Family Strigidae (Typical Owls) J. S. Marks, R. J. Cannings & H. Mikkola

Order CAPRIMULGIFORMES:
Family Steatornithidae (Oilbird) B. T. Thomas
Family Aegothelidae (Owlet-nightjars) D. T. Holyoak
Family Podargidae (Frogmouths) D. T. Holyoak
Family Nyctibiidae (Potoos) M. Cohn-Haft
Family Caprimulgidae (Nightjars) N. Cleere

Order APODIFORMES:
Family Apodidae (Swifts) P. Chantler
Family Hemiprocnidae (Tree-swifts) D. R. Wells
Family Trochilidae (Hummingbirds) K. L. Schuchmann

# 76 colour plates
# 406 photographs
# 758 distribution maps
# 10 figures and tables
# c. 8000 bibliographical references

Foreword on species concepts and species limits in ornithology by Jürgen H. Haffer.

Order PTEROCLIFORMES:
Family Pteroclidae (Sandgrouse) E. de Juana

Order COLUMBIFORMES:
Family Columbidae (Pigeons and Doves) L.F. Baptista, P.W. Trail & H.M. Horblit

Order PSITTACIFORMES:
Family Cacatuidae (Cockatoos) I. Rowley
Family Psittacidae (Parrots) N.J. Collar

Order CUCULIFORMES:
Family Musophagidae (Turacos) D.A. Turner
Family Cuculidae (Cuckoos) R.B. Payn

# 70 colour plates of birds
# 236 colour photographs
# 837 distribution maps
# 13 figures and tables
# c. 7000 bibliographical references

Foreword by Walter J. Bock on the organization of information in the HBW.

Order FALCONIFORMES:
Family Cathartidae (New World Vultures) D.C. Houston
Family Pandionidae (Osprey) A.F. Poole
Family Accipitridae (Hawks and Eagles) J.M. Thiollay
Family Sagittariidae (Secretarybird) A.C. Kemp
Family Falconidae (Falcons and Caracaras) C.M. White, P.D. Olsen & L.F. Kiff

Order GALLIFORMES:
Family Megapodiidae (Megapodes) A. Elliott
Family Cracidae (Chachalacas, Guans and Curassows) J. del Hoyo
Family Meleagrididae (Turkeys) W.F. Porter
Family Tetraonidae (Grouse) E. de Juana
Family Odontophoridae (New World Quails) J.P. Carroll
Family Phasianidae (Pheasants and Partridges) P.J.K. McGowan
Family Numididae (Guineafowl) I. Martínez

* 60 colour plates of birds
* 302 colour photographs
* 590 distribution maps
* more than 7000 bibliographical references

Foreword by Robert Bateman on art and nature.

Ordre OPISTHOCOMIFORMES
Family Opisthocomidae (Hoatzin) B.T. Thomas

Ordre GRUIFORMES
Family Mesithornithidae (Mesites) M.I. Evans, A.F.A. Hawkins & J.W. Duckworth
Family Turnicidae (Buttonquails) S.J.S. Debus
Family Gruidae (Cranes) G.W. Archibald & C.D. Meine
Family Aramidae (Limpkin) D.C. Bryan
Family Psophiidae (Trumpeters) P.T. Sherman
Family Rallidae (Rails, Gallinules and Coots) P.B. Taylor
Family Heliornithidae (Finfoots) B.C.R. Bertram
Family Rhynochetidae (Kagu) G.R. Hunt
Family Eurypygidae (Sunbittern) B.T. Thomas
Family Cariamidae (Seriemas) L.P. Gonzaga
Family Otididae (Bustards) N.J. Collar

Ordre CHARADRIIFORMES
Family Jacanidae (Jacanas) D.A. Jenni
Family Rostratulidae (Painted Snipes) G.M. Kirwan
Family Dromadidae (Crab Plover) M.R.W. Rands
Family Haematopodidae (Oystercatchers) P.A.R. Hockey
Family Ibidorhynchidae (Ibisbill) A.J. Knystautas
Family Recurvirostridae (Avocets, Stilts) R.J. Pierce
Family Burhinidae (Thick-knees) R.A. Hume
Family Glareolidae (Pratincoles, Coursers) G.L. Maclean
Family Charadriidae (Plovers) T. Piersma & P. Wiersma
Family Scolopacidae (Sandpipers & Allies) T. Piersma, J. van Gils & P. Wiersma
Family Pedionomidae (Plains-wanderer) D.J. Baker-Gabb
Family Thinocoridae (Seedsnipes) J. Fjeldså
Family Chionidae (Sheathbills) A.E. Burger
Family Stercorariidae (Skuas) R.W. Furness
Family Laridae (Gulls) J. Burger & M. Gochfeld
Family Sternidae (Terns) M. Gochfeld & J. Burger
Family Rhynchopidae (Skimmers) R.L. Zusi
Family Alcidae (Auks) D.N. Nettleship

* 60 colour plates of birds
* 384 colour photographs
* 577 distribution maps
* more than 8000 bibliographical references