How do birds reproduce?

You often see birds that appear to be courting each other, but do they actually mate? And if so, how does that work? Birds probably have the most sophisticated courtship and mating methods in the entire animal kingdom. They sing, dance and perform rituals to demonstrate their qualities as parents and strengthen the bond. Only after the entire ritual has been completed and both partners have approved each other's qualities, mating and fertilization take place.

Birds with internal fertilization