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Why Can’t Some Birds Fly?

104,709 views

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Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

98%
  • 4:33 / 4:37

Speech Rate:

  • 173 wpm - Fast

Category:

  • Science & Technology

Tags :

Intro:

Video Vocabulary

populations

/ˌpäpyəˈlāSH(ə)n/

noun other

all inhabitants of place. Numbers of people who live in countries areas etc..

penguins

/ˈpeNGɡwin/

noun other

large flightless seabird of southern hemisphere, with black upper parts and white underparts and wings developed into flippers for swimming under water. Black and white sea birds that cannot fly.

specifically

/spəˈsifək(ə)lē/

adverb

In particular.

ostriches

/ˈästriCH/

noun other

flightless swift-running African bird with long neck. Very large bird that cannot fly, with a long neck.

evolution

/ˌevəˈlo͞oSH(ə)n/

noun

Theory that living things change over time.

decreased
verb

To reduce the size, amount or number of something.

develop

/dəˈveləp/

verb

grow and become more advanced.

possible

/ˈpäsəb(ə)l/

adjective noun

Having a chance of happening, or being true. candidate for job.

flightless

/ˈflītlis/

adjective

(of bird or insect) naturally unable to fly.

influenced

/ˈinflo͝oəns/

verb

To affect or change something indirectly.

ratites

/ˈratīt/

noun

any of mostly large, flightless birds with ratite breastbone, i. e. ostrich, rhea, emu, cassowary, and kiwi, together with extinct moa and elephant bird.

scientists

/ˈsīəntəst/

noun other

person who is studying or has expert knowledge of one or more of natural or physical sciences. People who are trained in a science.

thought

/THôt/

noun verb

Person's opinion about something. To have an idea, opinion or belief about something.

includes

/inˈklo͞od/

verb

comprise or contain as part of whole.

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