What ARE birds?

We just don't know.

File: Cola Bird.jpg (137KB, 750x887px) Image search: [Google]

137KB, 750x887px

>>21701
Descendants of the ancient dinosaurs.

File: 1902bfc07a6d9c25dd3a874cdfbd1958.jpg (26KB, 500x375px) Image search: [Google]

26KB, 500x375px

Birds are very important.

File: BIRD.png (828KB, 734x555px) Image search: [Google]

828KB, 734x555px

>>21701
Birds are not important

File: 1489385073423.png (198KB, 575x438px) Image search: [Google]

198KB, 575x438px

>>21731
>>21730

>>21701
>implying owls are birds

File: owl without fur.jpg (23KB, 600x315px) Image search: [Google]

23KB, 600x315px

>>21743
Owls aren't even from this planet

File: 1490810682398.gif (856KB, 250x250px) Image search: [Google]

856KB, 250x250px

>>21701

File: Bird_Diversity_2013.png (1MB, 640x892px) Image search: [Google]

1MB, 640x892px

Birds, also known as avian dinosaurs, are a group of endothermic vertebrates, characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

File: __emperor_penguin_gentoo_penguin_humboldt_penguin_rockhopper_penguin_and_royal_penguin_dragon_ball_dragon_ball_z_and_kemono_friends_drawn_by_kamishima_kanon__3add4bb1994ab600d8858ab0b38d5064.jpg (625KB, 2000x1400px) Image search: [Google]

625KB, 2000x1400px

>>21701
Cute