What is the difference between a male and female kookaburra?

The most obvious answer is the length of the beak. In adult birds, the male's beak is much thicker and longer. The body of a male is also thicker set, but this isn't always easy to see if the kookaburra you're looking at is alone. But the beak is distinctive

• thick and with a higher bridge and also longer in the male.

Juvenile male's are not so obvious - they are similar in size and shape in both body and beak size to females.