What is the size of a baby cuckoo?

Baby cuckoos, known as chicks, are relatively small at birth, typically measuring around 2 to 3 inches in length and weighing just a few grams. They are altricial, meaning they are born helpless and rely on their foster parents for feeding and care. As they grow, they can increase significantly in size, often reaching up to 10 inches in length before fledging.