After about 10 days if she has not returned they will most likely not be viable. This depends on temperatures and weather.
There are things that a person can do to cause a duck to become infertile. Feeding certain foods, along with allowing a duck to get too warm or too cold, can all cause it to become infertile.
Yes, they can...although the eggs will be infertile
They can - but they'll be infertile.
Yes turkey eggs are brown
I Breed Lovebirds and when their is a female lovebird in a separated cage I often find infertile eggs laying on the bottom of the cage. If you leave them their you will soon get even up to 20 infertile eggs so when you see that the lovebird have layed this sort of eggs remove them after 1 day or so.
As long as there is no rooster around to mate with the hens, you will not receive fertile eggs.
They start laying eggs when they are about 1 year and 3 months later.
They lay about 70 fertile eggs and up to 40 infertile eggs.
The incubation period for lovebirds is about 23 days. So after this time has elapsed, and if the eggs were incubated correctly by the parents, the chicks will begin to hatch. If the eggs do not hatch then they are probably infertile and can be removed from the nest. It is common and natural for females to lay infertile eggs.
eggs
No
All female birds can lay eggs without a mate. However, without a male, the eggs will be infertile and will not hatch.