Spot on! In its hunting dive, or stoop, the peregrine falcon can exceed 320 km/h (200 mph), making it the fastest animal on Earth.

It's the peregrine falcon! When it folds its wings and dives, it can top 320 km/h (200 mph), faster than any other animal.

Correct! The common ostrich can stand about 2.7 m (9 ft) tall and weigh over 130 kg (285 lb). It also lays the biggest eggs of any living bird.

Good guess, but it's the common ostrich. It can reach about 2.7 m (9 ft) tall and weigh more than 130 kg (285 lb). It's far too heavy to fly, but it can run at about 70 km/h.

Exactly! Birds evolved from small feathered theropods, the same group as Velociraptor and T. rex. That means birds are technically living dinosaurs.

The answer is theropods, the two-legged dinosaurs that include T. rex and Velociraptor. Many theropods had feathers long before birds took to the air. Pterosaurs weren't dinosaurs at all.

Right! Their flexible shoulder joints let them swivel their wings and trace a figure-eight pattern. That gives them lift on both the upstroke and the downstroke, so they can hover and fly backwards.

It's their shoulder joints, which let the wings rotate. The wings trace a figure-eight that makes lift in both directions, so hummingbirds can hover, fly sideways and even fly backwards.

Impressive knowledge! Arctic terns fly between the Arctic and Antarctica each year. Tracked birds have covered about 70,000 km (44,000 miles), the longest migration of any animal.

The answer is about 70,000 km (44,000 miles), the longest known migration of any animal. Arctic terns follow the summer from pole to pole, so they see more daylight than any other creature.

Exactly! Flamingos get carotenoid pigments from algae and brine shrimp, and their bodies turn them into pink and red colors in their feathers.

The answer is their diet. Carotenoid pigments in algae and brine shrimp color their feathers, which is why flamingo chicks hatch grey and only turn pink later.

Right! The wandering albatross can reach about 3.5 meters (11.5 feet) from wingtip to wingtip, which lets it glide over oceans for hours with barely a flap.

It's the wandering albatross, with wings spanning up to about 3.5 meters (11.5 feet). The Andean condor is a close rival, but the albatross holds the record.

Spot on! Comb-like edges and velvety feathers break up the air, muffling sound so owls can hear their prey while their prey can't hear them.

The answer is soft, comb-like fringes on their feathers. They break up turbulent air and muffle noise, and many owls also have uneven ear openings that help them pinpoint sounds.

Correct! The dodo of Mauritius vanished by the late 1600s, less than a century after sailors arrived with hunting, rats, pigs and other invasive animals.

The dodo was gone by around 1690. Hunting by sailors and invasive animals that ate its eggs wiped out this flightless bird of Mauritius in under a hundred years.

Well done! Young songbirds listen to an adult tutor, often their father, and practice during a sensitive period, a bit like babies babbling before they talk.

They copy an adult tutor, usually during a sensitive period early in life. Young birds even 'babble' imperfect songs while practicing, which is why scientists study them to understand human speech learning.