How Long Does It Take For A Birds Egg To Hatch?

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asked 8 months ago

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I have a nest with 4 robin eggs and it has been 3 weeks and no babies, the mom is still sitting on them, are we going to have babies?

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answered 6 months ago

Zebra Finch BreedingEggs usually are
laid at the rate of one per day.
Incubation starts after the last egg is laid, and the eggs start hatching
about thirteen days later.  most birds can lay between one and eight eggs, but most nests have between two and five
eggs on average. The female does most of the incubating but the male will also
take his turn on the eggs to give the female a chance to stretch, eat, and
drink.
If the eggs are
fertile, they will turn a darker color after the first week. If you cannot tell
buy looking at the eggs whether or not they are fertile, you can candle them.
Candling eggs is really pretty simple but if you are very nervous about it, do
not attempt it. To candle an egg all you need is a pen light or a small
flashlight. Put the light behind the egg and look for small red veins inside the
egg. You may also see the tiny embryo's heart beating
which will look like a small red dot rapidly pulsating within a larger red area.
If the egg is a week old the entire contents of the interior of the egg
might appear red, and by this time, you probably will not be able to distinguish
the actual embryo.

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