Classroom lesson ยท Wildlife ยท ๐Ÿ‡ง๐Ÿ‡ผ Botswana

Kori Bustard

The heaviest bird in the world that can still fly

A kori bustard walking through dry savannah grass, its large body and grey-brown plumage visible

Photo ยท Wikimedia Commons

What is it?

The kori bustard is the heaviest flying bird in the world. Males can weigh up to 19 kilograms โ€” about the same as a 5-year-old child โ€” and yet they are still able to take off and fly. They stride across the open plains and Kalahari grasslands of Botswana looking very grand and important.

Tell me more

Kori bustards are tall, sturdy birds with grey-brown feathers that camouflage perfectly against dry grass. They walk rather than hop, taking slow deliberate strides across the savannah. Their wingspan can reach 2.5 metres โ€” wider than a tall adult human can stretch their arms. Despite being so heavy, they fly well when they need to, though they prefer to walk.

During the breeding season, male kori bustards put on a remarkable display to impress females. They puff up their feathers, fan out their tail, inflate their throat into a huge white fluffy balloon, and make deep booming calls. It looks like they have suddenly turned into a giant feathery cloud. The display can last for hours.

Kori bustards eat almost anything โ€” insects, small lizards, seeds, berries, and even the gum that oozes from acacia trees. They are often found near large animals like elephants and lions, because the movement of big animals disturbs insects in the grass, making them easier to catch.

These birds are very popular with birdwatchers visiting Botswana. They are easy to spot because of their size and their slow, stately walk. The kori bustard is also the national bird of Botswana's neighbour South Africa, which shows how well-loved it is across the region.

In the classroom

Walk your class through this in 15 minutes.

Talk together

Discussion prompts

  1. 01If kori bustards prefer to walk and only fly when they need to, when do you think they would choose to fly?
  2. 02Why do you think the male's courtship display is so over-the-top and dramatic? Does this remind you of any other animals?
  3. 03Following elephants to find food is a smart strategy. Can you think of other animals that use another animal's behaviour to help them?
Try this

Classroom activity

Hold out your arms and measure your own wingspan โ€” the distance from fingertip to fingertip. Then measure 2.5 metres on the floor with a tape measure. How much bigger is the kori bustard's wingspan than yours? Record the comparison on a poster with drawings to scale.