What do most flightless birds lack that flying birds have?

A keeled breastbone for flight muscles

Flightless Birds Quiz – How Much Do You Really Know?

The dodo of Mauritius lost the power of flight long before people arrived, and this flightless birds quiz asks why so many birds gave up the sky. Race ostriches across Africa, sniff out worms with the kiwi in New Zealand and meet the emu, rhea and cassowary.

Start Flightless Birds Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Fastest
Which flightless bird is the fastest runner?
Dodo
Where did the dodo live?
Kiwi
What is unusual about the kiwi's beak?
Cassowary
Which flightless bird has a dagger-like claw and a helmet called a casque?
Islands
Why did many island birds become flightless?
Moa
Which giant flightless birds lived in New Zealand?
Rhea
Which flightless bird lives in South America?
Emu
Which flightless bird is on Australia's coat of arms?
Parrot
Which flightless parrot lives in New Zealand?
Keel
What do most flightless birds lack that flying birds have?

Explanations: answer key for all 10 questions

Q1: Which flightless bird is the fastest runner?
Answer: Ostrich
It can reach about 70 km/h.
Q2: Where did the dodo live?
Answer: Mauritius
It was extinct by about 1681.
Q3: What is unusual about the kiwi's beak?
Answer: Its nostrils are at the tip
It sniffs out worms in the soil.
Q4: Which flightless bird has a dagger-like claw and a helmet called a casque?
Answer: Cassowary
It lives in New Guinea and Australia.
Q5: Why did many island birds become flightless?
Answer: There were no ground predators
Flying uses lots of energy.
Q6: Which giant flightless birds lived in New Zealand?
Answer: Moa
Some stood about 3.6 meters tall.
Q7: Which flightless bird lives in South America?
Answer: Rhea
Males incubate the eggs.
Q8: Which flightless bird is on Australia's coat of arms?
Answer: Emu
It appears with a kangaroo.
Q9: Which flightless parrot lives in New Zealand?
Answer: Kakapo
It is critically endangered.
Q10: What do most flightless birds lack that flying birds have?
Answer: A keeled breastbone for flight muscles
Penguins are an exception.

Flightless Birds Quiz – Birds That Stay on the Ground

Flightless birds have lost the ability to fly over millions of years. They include large running birds called ratites, such as ostriches, emus, rheas, cassowaries and kiwis, as well as penguins and many island species.

On islands with no ground predators, flying offered little advantage, so birds like the dodo, kakapo and takahe stopped flying. On continents, large size and fast legs helped ostriches and emus escape danger.

When humans arrived with rats, cats and dogs, many flightless birds could not escape. The dodo and the moa were wiped out, and others, like the kakapo, survive only thanks to protected islands and careful conservation.

What This Quiz Teaches

Animal fans and history buffs will enjoy these questions.

Which flightless bird is fastest
Where the dodo lived
Why island birds stopped flying
Which giant birds vanished
How kiwis find food

Did You Know?

Ostriches have the largest eyes of any land animal.
Kiwis are nocturnal.
The great auk was flightless.
Cassowaries can jump high.
Elephant birds lived in Madagascar.