How AI is revealing the language of the birds

Researchers have been eavesdropping on unusually close-knit families of carrion crows (corvus corone corone) in Spain, collecting data on hundreds of thousands of different vocalisations. Small microphones recorded a variety of soft calls, far quieter than the familiar ‘caws’. The team then used AI to analyse and group the sounds. The researchers aim to better understand how the crows cooperate — and experiment with some human-crow chats.