When it comes to birds with white heads, black-tailed gulls are quite easy to recognize. They have white bodies, wings that go from light gray to dark brown, and dark brown tail feathers.

In a study published March 25 Current Biology, a team from the University of Tokyo describes how this small bird appears to use this wing to say “after you” to indicate that the other bird.

Increase oven temperature to high broil. Broil wings until golden brown and crispy, 8 to 11 minutes. 3. While wings bake, heat remaining 3 tablespoons coconut oil in a small saucepan over medium high.