The lapwing's unearthly sounds fill the fields | Birds | The Guardian
August: eavesdropping birds | News and features | University of Bristol
Speedy revelations: how alarm calls can convey rapid, reliable information about urgent danger | Proceedings of the Royal Society B: Biological Sciences
Birdsong identification for beginners: 20 common songs and calls | Natural History Museum
Chaffinch calls | The British Library
A brief introduction to learning bird song | Scottish Wildlife Trust
Alarm and mobbing calls | The British Library
♫ Chiffchaff - song / call / voice / sound.
♫ Wren - song / call / voice / sound.
Chaffinch calls | The British Library
August: eavesdropping birds | News and features | University of Bristol
Audio Bird Scarer Audio Bird Scarer
Bird lookouts make alarm calls to save themselves, not the group | New Scientist
Birdsong identification for beginners: 20 common songs and calls | Natural History Museum
5 Bird Sounds To Listen Out For & What They Mean - GardenBird
Traffic noise may endanger wild birds making it harder for them to hear alarm calls | Daily Mail Online
Alarm and mobbing calls | The British Library
Alarm and mobbing calls | The British Library
Bird alarm: Great tits use 'predator-specific' calls - BBC News
Blackcap: bird song and calls | Sussex Wildlife Trust
Birdsong identification for beginners: 20 common songs and calls | Natural History Museum
Nuthatches vary their alarm calls based upon the source of the eavesdropped signals | Nature Communications
Birdsong identification for beginners: 20 common songs and calls | Natural History Museum
How to identify bird song and bird calls | BBC Wildlife Magazine | Discover Wildlife
Bird Song Identifier | Audio of Garden Bird Calls - The RSPB
