Crows don’t just remember humans. Here’s a breakdown of how they form opinions, assign reputations and teach each other who to trust. If you’ve ever felt like a crow was watching you a little too ...

The crow stared at the screen, as it had many times before. Six shapes appeared. Five were neat, balanced, regular; one was not. The crow tilted its head, paused, and tapped the odd one out. A chime ...