When a sperm cell meets an egg cell, the head of the sperm fuses with the egg. The flagellum of the sperm is lost, its work is finished. The information in the nucleus of the male's sperm can combine with the information in the nucleus of the female's egg to produce an offspring. This important event is called fertilization. If fertilization takes place inside the female's body - as it does in mammals or birds - it is called internal fertilization. If it happens outside the female, in water, it is called external fertilization.
Sparrows exhibit internal fertilization, where the sperm fertilizes the egg inside the female's body. The male bird transfers sperm to the female through copulation.
Turducken -Chicken inside a duck inside a turkey
if you mean eggs you buy in a store, then no, because these eggs were conceived by the bird without male fertilisation.
Your bird will die.
Yes, fertilized bird eggs can float due to air pockets forming inside as the embryo develops. This can happen as the egg ages, allowing it to become more buoyant in water.
The ostrich.
Angry Bird
Kee Bird happened in 1947.
Bird Week happened in 1986.
Then someone would have to write "Bird, bird, bird - bird ain't the word."
Noramally, is pretty difficult to determine wether the bird will lay eggs or not. But keep in mind if it's one bird, it wont hatch. It takes a female and male. Females can lay eggs on their own but it wont be fertilized. You could probably tell if the bird goes inside a nesting box (if she has one) often.
It means that the baby bird inside got out.