Crows, ravens, jays, and magpies demonstrate remarkable cognitive abilities including tool use, planning, and social learning, with urban populations raising specific welfare considerations around conflict and adaptation.
Key Facts
New Caledonian crows fashion multi-step tools from leaves and sticks to retrieve food from crevices
Rooks have passed the Aesop fable test, dropping stones into water-filled tubes to raise a floating reward
Carrion crows in Japan place walnuts on roads for cars to crack, then retrieve at pedestrian crossings
Corvids show evidence of planning for the future and fairness responses in economic games
Urban crow populations are growing in many cities as landfill and food waste provide abundant food
Crows remember individual human faces and pass information about threatening people to their offspring
Welfare Considerations
Corvid cognitive complexity means their welfare deserves particular moral consideration. Crows that recognise individual humans as threats and communicate this to offspring are demonstrating a form of cultural memory and social learning that carries emotional valence. Urban crows killed or trapped in pest control operations experience a welfare harm with additional dimensions: the social disruption affects related and familiar birds. Feeding wild corvids creates dependency but also presents welfare benefits in food-secure periods. Corvids injured by vehicles or pest control measures suffer acutely. Respecting corvids as cognitively sophisticated animals — refraining from persecution and supporting coexistence — is the most direct welfare response.
What You Can Do
Refrain from persecuting corvids and support legal protections for all native crow species
Report illegal corvid trapping or poisoning to wildlife law enforcement
Support corvid cognition research programmes that advance understanding without causing harm
Respect crows as cognitively complex animals worthy of consideration in urban planning decisions
Raise awareness about corvid intelligence and the ethical implications for how we treat them