If you want to mix them in with the older hens, have the chicks in a little chicken tractor(or separate pen)just outside the older flocks run, when they are old enough to be outside. You can put your chicks outside when they are about 3 or 4 weeks old, but they still might need a heat lamp.
Inhalation is the process of bringing air into the lungs while exhalation is the process of pushing the air out of the lungs. Inhalation helps the body bring in oxygen and exhalation helps the body expel carbon dioxide. Continue Reading.
Inhalation- Air is breathed in through the nose or mouth. It then travels down the trachea, to the lungs (via the bronchi). When it gets to the alveoli, oxygen is put in the oxygen poor blood and swapped for carbon dioxide. Exhalation- Carbon dioxide is pushed out of your body through the nose or mouth when your diaphragm contracts. At the site of the alveoli, the oxygen goes into the oxygen poor blood that is coming from all over the body. The carbon dioxide is then forced out and breathed out.