About us: We own the Wild Birds Unlimited nature shop in East Lansing, Michigan,
a store that provides a wide variety of supplies to help you enjoy the birdwatching hobby.

This blog was created to answer frequently asked questions & to share nature stories and photographs.
To contribute, email me at bloubird@gmail.com.

Wednesday, June 15, 2016

What happens inside a bird egg

Photo from Wikimedia Commons
Once birds mate, sperm is stored by the female for at least a week, in some species over a hundred days. Then it usually takes 24 hours for the female to produce one egg. She’ll lay an egg and then may cover it slightly with some nesting material and leave the nest. Most birds don’t begin to incubate until all eggs are laid, so they will hatch at the same time.

Once incubation begins, the embryo starts to develop. It needs food, water and oxygen to grow. The yolk provides most of the food, the albumen provides protein and water and the oxygen passes through the shell and the membranes.

During the last two days the chick inside the egg begins to breathe with its lungs for the first time. To do this it needs an air supply inside the egg shell. At the round end of the egg there is an air space. If you examine an egg carefully with a magnifying glass, you'll see that there are tiny little holes, called pores, that let the bird breathe. The chick also calls through the shell to communicate with its momma before it hatches.
Source:  http://www.saburchill.com
Birds Embryonic development video: https://youtu.be/-Ah-gT0hTto
Related Articles:
Types of Bird feathers http://bit.ly/GOwsuu
How Do Birds Lay Eggs? http://bit.ly/H8omO0
Do birds have belly buttons? http://bit.ly/GVqhpT
Is there a bird without feathers? http://bit.ly/Aora0F
Bird Egg Identification http://bit.ly/yzCsvt

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