This text serves as a regional identification guide for the avian species inhabiting Port Moresby and its surrounding districts. Roy D. Mackay, drawing upon his expertise in local natural history, provides a structured inventory of bird life found within this specific geographic zone. The work functions as a foundational reference for observers seeking to document and identify local fauna through systematic classification.

Experts and local researchers identify this work as a specialized regional resource for ornithological documentation. Readers frequently note the technical focus of the text, which prioritizes identification accuracy over narrative prose.