Anonymous's Quiz result in "Animals"

Your answer	Choices	Correct answer
	A. Pelican
	B. Wood duck
	C. Loon
	D. Canadian goose

The correct answer is C: Loon.

You can hear the beautiful loon call, thanks to the Cornell Lab of Ornithology's Macaulay Library.

Source: The Loon Preservation Committee

Your answer	Choices	Correct answer
	A. Echolocation
	B. Talking to other toothed whales
	C. Swimming in special patterns
	D. Dropping pieces of food to find out where things are around them

The correct answer is A: Echolocation.

Toothed whales use echolocation to help them find out the distance of objects around them, the location of food, and even the depth of the water they’re swimming in!

Source: National Oceanic and Atmospheric Administration

Your answer	Choices	Correct answer
	A. A squeaky wheel
	B. An upset baby
	C. A screeching howler monkey
	D. The peep of a baby bird

The correct answer is B: A hungry cat might meow like an upset baby to get your attention.

Source: National Geographic Kids

Your answer	Choices	Correct answer
	A. Wing feathers
	B. Feet
	C. Tail feathers
	D. Nostrils

The correct answer is A: Wing feathers.

Researchers from the Cornell Lab of Ornithology believe that they have discovered the first bird species that makes singing sounds with the feathers of its wings. The male club-winged manakin vibrates its wings at more than 100 cycles per second, twice as fast as a hummingbird.

Source: National Geographic Kids

Your answer	Choices	Correct answer
	A. Whether they are upside down or right side up in the water
	B. The size and location of nearby prey
	C. Whether it’s day or night
	D. The temperature of the water

The correct answer is A: Whether they are upside down or right side up in the water.

Ear stones respond to gravity and help sharks orient themselves in the water.

Source: Smithsonian National Museum of Natural History

Your answer	Choices	Correct answer
	A. Large toads that blend in well with their surroundings
	B. A nickname for the goldfinch (beautiful yellow bird)
	C. A kind of hummingbird
	D. Tiny frogs

The correct answer is D: Tiny frogs.

They're found in the central and eastern U.S. and Canada.

Source: National Geographic Kids

Your answer	Choices	Correct answer
	A. Trunk
	B. Feet
	C. Tail
	D. Ears

The correct answer is D: Ears.

According to the National Wildlife Federation, “Elephants can radiate heat from their ears, which they hold out from their bodies. Blood flow into the ears carries heat out of the body, and cooler blood re-enters the bloodstream, reducing the effects of heat.”

Source: National Wildlife Federation

Your answer	Choices	Correct answer
	A. They are very large compared to mammals’ eyes
	B. They contain small bones that help mammals hear better than other classes of animals
	C. They work well when a mammal is young, but work poorly when a mammal is old
	D. Female mammals’ ears hear better than male mammals’ ears

The correct answer is B: They contain small bones that help mammals hear better than other classes of animals.

The three bones in humans’ ears are the smallest bones in the human body! You can read more about these three tiny bones.

Source: Smithsonian National Museum of Natural History

Your answer	Choices	Correct answer
	A. Extrasound
	B. Infrasound
	C. Superquiet
	D. Minimasound

The correct answer is B: Infrasound.

Infrasound is sound that vibrates at a frequency much lower than the average human ear can detect.

The Elephant Listening Project was started when researcher Katy Payne, working at a zoo, "felt (more than heard) the low-frequency rumbling communication of two Asian elephants, a male and female, who were standing on opposite sides of a concrete wall. Katy and a group of dedicated colleagues demonstrated that elephants often communicate using sounds below the threshold of human hearing, that these sounds carry over vast distances, and that elephants use vocal communication to bind their complex family social system together."

Read more about The Elephant Listening Project in our Have You Heard article.

Source: The Elephant Listening Project

Your answer	Choices	Correct answer
	A. Tymbals
	B. Tummies
	C. Symbols
	D. Maracas

The correct answer is A: Tymbals.

The din from cicadas can reach 90 decibels! You can read more about cicadas in our Noise in the News article.

Source: The Washington Post

Your answer	Choices	Correct answer
	A. Head
	B. Stomach
	C. Back
	D. Wings

The correct answer is B: Stomach.

Male cicadas use drum-like structures on their abdomen called tymbals to create a loud, high-pitched buzz to attract female companions, who respond with a quick flick of their wings together. Read more about cicadas in our Have You Heard article.

Source: Scholastic

Your answer	Choices	Correct answer
	A. Elephants
	B. Dogs
	C. Birds
	D. Humans

The correct answer is C: Birds.

Often noise-induced hearing loss in humans is caused by damage to hair cells. Birds and amphibians can regrow hair cells, but humans can’t.

Source: The National Institute on Deafness and Other Communication Disorders 

Your answer	Choices	Correct answer
	A. To help keep the ears clean
	B. To help the hippo see better
	C. To keep the ears dry
	D. To hear while under water

The correct answer is D: To hear while under water.

Source: San Diego Zoo