This book investigates the diverse avian populations inhabiting Rottnest Island, Western Australia. Drawing on extensive field observations and existing ornithological records, Saunders presents a comprehensive overview of the island's birdlife, detailing species distribution, breeding habits, and ecological interactions. The work aims to document the unique avifauna of this coastal environment and highlight factors influencing its biodiversity.

This specialized work is likely regarded as a foundational text for ornithologists and ecologists interested in Western Australian birdlife. Its focus on a specific island ecosystem suggests a detailed, data-driven approach, valuable for researchers and conservationists. The publication date indicates it may represent an early, yet significant, survey of the island's avifauna.