Why can't some birds fly? - Gillian Gibb

Though the common ancestor of all modern birds could fly, many different bird species have independently lost their flight. Flight can have incredible benefits, especially for escaping predators, hunting and traveling long distances. But it also has high costs: consuming huge amounts of energy and limiting body size and weight. Gillian Gibb explores what makes birds give up the power of flight.

Lesson by Gillian Gibb, directed by Anton Bogaty.

Thank you so much to our patrons for your support! Without you this video would not be possible! Paul Beard, Deepak Iyer, Markus Goldhacker, Mihai Sandu, Keven Webb, Hendrik Mueller, Maurice Castonguay, Kristiyan Bonev, Maryam Dadkhah, Joshua Wasniewski, Michał Friedrich, Arlene Spiegelman, Doug Henry, Alick Au, denison martins fernandes, Daniel Nester, Richard A Berkley, Benjamin Chan, Dee Wei, Abdallah Absi, Denise A Pitts, Pi Guanghui, Doris, Kurt Almendras, Raymond Lee, Nicolas Silva, Melvin Williams, Tirath Singh Pandher, Terry Minion, Mauricio Basso, Jamesbo87, Karlee Finch, Chumi Ogbonna, Barthélémy Michalon, Lefty McGoo, Anonymous, Chris Thompson, Derek Drescher, Karisa Caudill, Christina Salvatore, Brady Jones, Todd Gross, Alexis Hevia, Heidi Stolt, Robert Seik, Coenraad Keuning, Charles A Hershberger, Laura Cameron Keith, Max Ngomane and Rafael Kato.

[standoughope]

4:09 You just couldn't resist could you TED-Ed!

[sewerrat]

“And tiny kiwis”
My mind:

🥝
🦵 🦵

[Galistarwater]

Other birds "swim" in the air, penguins can "fly" underwater.

[louise]

Because they're playing in Survival Mode

[HowToForYouChannel]

maybe they are flying when we are not watching...

[biohazard]

Flightless birds' responses to predators:

Cassowary - I will gut you and then punt your corpse into next Thursday.
Ostrich - Only part of me you're eating is my dust.
Kiwi - What kind of dipping sauce would you like?

[RFC_]

Please make a video on how the continents were formed.

[factsinmotion]

Evolution giveth, evolution taketh away

[AMcGrath]

0:28 That has got to be the most pissed off looking bird I have ever seen.

[cho_andrea]

is it just me or the voice of this person is my FAVORITE among all other lecturers? just calms me down while i learn something new 😊

[JeremyWS]

I really do like Penguins, they are cute.

[allthingsfascinating]

Thanks for making such amazing content free for all of us, and helping in making the world progress. I'm trying to do the same, but no where near you guys.

[KINGBADASS]

I always enjoy Anton Bogaty’s animations!

[aiwenchew]

Just one question; Since the birds can quickly lose their ability to fly in a few generation in absence of threats, how fast can they regain that ability?

[afifkhaja]

I love these videos! They are the perfect length. Entertaining and full of useful knowledge as well. Great animation and commentary

[iyunganam]

Dodo bird is one of my favorite species of flightless birds

[zoieycarlybloopers]

Don't change the person who reads the script. The narrators voice is quite relaxing.

[TommoCarroll]

Becaue *R Kelly* hasn't taught them how to BELIEVE they can!

[mariajona]

You are so funny and creative please keep doing what you're doing because you're doing it amazingly

[lukasbauer]

My flight school in New Zealand have these flightless birds studying pilot licenses, and we are training together to fly in the skies after graduation.