On cold, dark winter mornings, small black crows known as jackdaws can be heard calling loudly to one another from their winter roosting spots in the U.K. before taking off simultaneously right around ...

Jackdaws use a "democratic" process to decide when to leave their roosts en masse, new research shows. In winter, jackdaws roost in groups of hundreds or even thousands, and it is common for most or ...

When it comes to safety in numbers, jackdaws are keen to join the mob. The birds are more likely to band together to drive off predators if lots of their feathered friends are up for the fight, new ...