How many eggs are born at a time

Rhododendron will have a egg at a time.The reason why this bird is not born too much is because it has the characteristics of nest parasites. It does not run nests and brooding. Therefore, the eggs will be put into other bird nests, and the color of the egg will be parasitic.Eggs are similar to avoid being discovered.When its chicks hatch, other bird eggs will be pushed out of the nest, so as to enjoy the righteous bird's care.