ho has not marvelled at the huge, colourful bill of a toucan? They have the largest beak-to-body ratio of any bird in the world. The beak accounts for ± one-third of the bird’s body length! With the brightly coloured, enormous bill, the toucan looks like something out of a Dr Seuss book. But these exceptional birds are not residents of a fictitious storybook world, they are indeed residents of our wonderful planet
