How does a chick breathe?

Before a chick hatches from an egg, does it breathe from within the egg?

Answer:

While the embryo is developing, oxygen enters the egg through the shell and carbon dioxide escapes in the same manner. As the chicks hatch, they require an increased supply of fresh oxygen. As embryos grow, the air vent openings are gradually opened to satisfy increased embryonic oxygen demand.Once they have broken open a hole in the egg they start to take their first breaths. Sapphyre Certified Avian Specialist www.borrowed-rainbow.com Join us at http://groups.yahoo.com/group/BorrowedRainbowAviary/

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Other answers

yes their is a bag like structure which keep clean air for the chic

dragon_3d2003

yes it has pores on its shell

Fatatta

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