Weird exceptions

Cassowaries are very large flightless birds that live in tropical forests of New Guinea and northeastern Australia. The only birds bigger than the cassowary are the ostrich and emu.
Cassowaries mainly eat fruit, but will also eat new shoots, seeds and fungi, insects and small animals. Cassowaries usually travel around on their own except when it is time to find a mate and lay eggs.
The booming noise the cassowary makes is the lowest known bird call, and is so low humans can only just hear it.

Emus are a large flightless bird that lives in Australia. It is the second-largest bird, after the ostrich. They eat insects and some plants.
Emus lay very large, speckly blue eggs with hard shells. The male emu looks after the eggs and babies.

A flying fox is a type of very large bat with a wingspan as wide as a person's arms and a face that looks a bit like a fox. It lives in warm places and mostly eats fruit and nectar.

The kakapo is a kind of parrot that lives in New Zealand. It is a large, slow-moving bird.

It is known for its soft, sweet smell and its unusual habit of moving on the ground. The kakapo cannot fly well, so it climbs and walks instead.

The ostrich is a large flightless bird that is native to Africa. It is the largest bird in the world, and is farmed for its meat, skin and feathers. The ostrich egg when first laid contains the largest single cell on earth.

The sugar glider is a small marsupial found in Australia and New Guinea that looks like a tiny possum. Sugar gliders have a flap of skin between their front and back legs on both sides that they can stretch out and use to glide. Sugar gliders can jump out of trees and glide through the air to another tree, like a flying squirrel.
Sugar gliders eat the sweet sap of some trees, and some types of nectar.