The parents sit on them and the nest holds heat.
The gestation period of sparrow eggs, from fertilization to hatching, is typically around 10-14 days. During this time, the female sparrow will stay on the nest to keep the eggs warm and help them develop.
The bird sits on the eggs and by using heat to keep them warm until they hatch
Yes, all birds lay eggs, that includes the sparrow.
A shrew is a mammal, and does not lay eggs!
keep their eggs warm
They sit on it.
sit on them
so that their baby's will develop properly , if your told its to keep them warm its wrong , ( birds sit on the eggs to keep them warm).
the mama bird sits on the eggs to keep them warm
be careful to not brake the eggs and keep them warm.
Penguin baby eggs are kept warm by the father while the mother looks more food
Incubators. a good temperature is 99.5 degrees Fahrenheit.