Language: Dutch with 35-page French summary
Volume 2, Fascicles 1-3 (pages 1-564) covers the first part of the non-passerine birds of Belgian Congo and Ruanda-Urundi (which later became Rwanda and Burundi) and covers the families Struthioniformes, Colymbiformes, Procellariiformes, Pelecaniformes, Ciconiiformes, Phoenicopteriformes, Anseriformes, Falconiformes, Galliformes, Turniciformes, Ralliformes, Gruiformes, Charadriiformes, Lariformes, Columbiformes, Cuculiformes, and Psittaciformes. A French summary with identification keys is included. This is parts I-III in the numbering of the birds.