Language: Dutch with French summaries and identification keys
Volume 3, Fascicles 1-2 (pages 1-340) covers the second part of the non-passerine birds of Belgian Congo and Ruanda-Urundi (which later became Rwanda and Burundi) and covers the families Coraciiformes, Strigiformes, Caprimulgiformes, Cypseliformes, Coliiformes, Trogoniformes, Piciformes. A French summary with identification keys is included. This is part IV & V in the numbering of the birds.