Do nanny birds hatch as soon as they see eggs?

Now many friends keep some birds as pets at home, and some birds are difficult to hatch. At this time, many friends hope to use nanny birds instead of hatching. So do nanny birds hatch as soon as they see eggs? In fact, nanny birds basically hatch the eggs that appear in their nests. This is because it often lives in groups, but if we want to artificially hatch its offspring, we need to pay attention to the following points: 1, the nanny bird must have 3-4 eggs in its nest, otherwise it may not be able to enter the hatching state. 2. It is best to put the eggs into it as fertilized eggs, which can be distinguished by some nanny birds. 3, it is best not to put more than five eggs, because its ability is limited.