ClipArt ETC
Diagram of the lungs and air sacs of a pigeon. <em>p</em>, air sacs; <em>lu</em>, lung; <em>t</em>, traches.

Pigeon Lungs

Diagram of the lungs and air sacs of a pigeon. p, air sacs; lu, lung; t,…

"The external air penetrates into every part of their body by the respiratory tubes, which ramify the whole cellular tissue. Wings alone would fail to support the bird."

Lungs of a Pigeon

"The external air penetrates into every part of their body by the respiratory tubes, which ramify the…

"The external air penetrates into every part of their body by the respiratory tubes, which ramify the whole cellular tissue. Wings alone would fail to support the bird."

Respiratory Organs of a Pigeon

"The external air penetrates into every part of their body by the respiratory tubes, which ramify the…