Global abundance estimates for 9,700 bird species | PNAS
Caged birds | Animals Australia
This 'Angry' Bird Is the Most Photogenic, Research Finds - The New York Times
Birdata
Australia's threatened birds declined by 59% over the past 30 years
Global abundance estimates for 9,700 bird species | PNAS
The first Threatened Bird Index (2018) – TSX
Bird Finder | BIRDS in BACKYARDS
Multispecies hybridization in birds | Avian Research | Full Text
How to Get Involved In the Aussie Backyard Bird Count | Brisbane Kids
Australian Bird Watching Checklist
Game duck species - Game Management Authority
Who killed off Australia's big birds? | Science | The Guardian
The Birds of Australia (Gould) - Wikipedia
Offshore and foraging pelagic seabirds
Measuring penguins from a distance — Magazine Issue 2: Spring 2001 — Australian Antarctic Program
Southern Cassowary - Bush Heritage Australia
Rainbow pitta - Wikipedia
Cassowary - Wikipedia
Birds of Paradise: Ellis Rowan in New Guinea | National Library of Australia
Play behaviour, not tool using, relates to brain mass in a sample of birds | Scientific Reports
