How Does a Bird Hatch?
I'll get right to the hatching part. Maybe in a later blog I can talk about how the egg is formed. After egg-laying begins , incubation begins. It may begin right after the first egg is laid or only after all of them are laid. Incubation means adding heat to the eggs and birds do this by molting feathers from their lower abdomen so the skin is exposed. This “incubation patch” becomes infused with blood so that body heat can be transferred to the eggs. One or both parents may incubate. Depending on the species of bird, incubation might only be a week or two or as long as two months in some penguins.
An egg can withstand a lot of environmental changes before incubation. Chicken eggs from the store are good for six weeks or so. In some countries they are even displayed on unrefrigerated shelves. But once incubation begins and the young bird starts to develop, the egg is very sensitive to temperature changes and any more than a few degrees too high or low will cause...
The last Posts from "Ornithology"
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- The Cedar Waxwing
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- Bluebirds of Happiness
- Archeopteryx and Evolution
- Bird Banding
- Red Hawks
- Canada Geese
- Lumpers and Splitters
- Audubon Christmas Bird Counts
- Birds Falling From the Sky
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- Media Ornithology
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