As you can see in the gif, respiration in birds requires two respiratory cycles (inspiration, expiration, inspiration, expiration) to move the air through the respiratory system. In mammals or insects, only one respiratory cycle is necessary. (inspiration, expiration)
I think the respiratory system of birds is especially interesting with it’s multiple air sacs. Birds have an especially high need for air to be able to fly and a unique solution. Here another explanation of [bird & gill respiration.](https://www.youtube.com/watch?v=6fOMswLAyy4)
Are you telling me that grasshoppers are constantly farting?
This is he coolest think I will see today.
As you can see in the gif, respiration in birds requires two respiratory cycles (inspiration, expiration, inspiration, expiration) to move the air through the respiratory system. In mammals or insects, only one respiratory cycle is necessary. (inspiration, expiration)
I think the respiratory system of birds is especially interesting with it’s multiple air sacs. Birds have an especially high need for air to be able to fly and a unique solution. Here another explanation of [bird & gill respiration.](https://www.youtube.com/watch?v=6fOMswLAyy4)
For further explanation, this video could also be helpful:
[human, bird, gill, trachea](https://www.youtube.com/watch?v=nTxR3e4VAzg)