19 in the Journal of Animal Ecology, showed that blue tits (Cyanistes caeruleus) and great tits (Parus major) learned what not to eat by watching videos of other tits choosing food via trial and error.

This learned behavior can help the birds avoid potential poisoning.

Birds' reactions when choosing good-tasting and bad-tasting almond packets were recorded, then shown to other birds.

Both blue tits and great tits ate fewer of the bitter packets with squares on them after watching the TV birds' behavior when eating them

This is the first study to show that blue tits are just as good as great tits at learning by observing other birds' eating habits