Bird lungs solved that one

which is something that's being worked on in the military

next generation body armour and advances into exoskeletons

https://svpow.files.wordpress.com/2013/04/schachner-et-al-2013-fig-13-full.png

crocodile/aligator lung on top

It is also a recirculatory type

Even though crocs are not high intensity runners

I am though curious why birbs didn't evolve a complete pass-through design with designated intake and exhaust air passges

That would be the most efficient breathing method of all

Kinda if the left nostril would be only inhaling, and the right only exhaling

http://people.eku.edu/ritchisong/554images/Bird_vs_mammal-resp_sys-B.jpg

left one is the bird lung scheme (right is mammal)

Imagine if on the left side the tubes would not be joining, then the flow ould be continuous and uninterrupted

https://www.youtube.com/watch?v=puVxGnl_3y8

https://youtu.be/P5y1UaXkaBU

m seeks female non smoking non liberal non ugly

remember young age heuristics...
>pretty, smart, loyal - you can only pick two

I'll take pretty and loyal thanks

I know which ones Khaled would take.

Nigger

https://t.co/osYd0yJGWG

BASED

fucking morley

lol

Dinosaurs aren’t birds.
*Birds aren’t real.*

Birds are fake, yes

esp pigeons

wtf are pigeons

i call cgi

You never see a baby pigeon

So they're fake

Man got a new job <:poggers:583775485620781087>

congrats mikey

have a good start

Thanks, daddy

Have you ever seen the back of your own head?

Without a mirror

ye i have

Or a recording, because that could've been shooped