Conservation biologist Tolga Aktas shares his fascination with watching jackdaws. He was struck by the contrast between its black plumage and piercing pale eyes, which they likely use as a communication tool. Jackdaws form large, noisy communal winter roosts with other species, and aren't afraid to mob predators behaviour which Tolga finds spectacular to see.

Presented by Tolga Aktas and produced by Sophie Anton for BBC Audio Production in Bristol.