Fertilization in birds occurs internally, and the process begins with courtship and mating. During mating, the male bird transfers sperm to the female through a process called cloacal. The sperm then travel through the female’s reproductive tract to reach the egg, which is located in the ovary. Once the sperm reaches the egg, it penetrates the egg’s outer shell and fuses with the egg’s nucleus. This fusion results in the formation of a zygote, which is the first stage of embryonic development.
The process of fertilization in birds is essential for reproduction and the continuation of the species. Fertilized eggs develop into embryos, which eventually hatch into chicks. Without fertilization, eggs would not be able to develop and new birds would not be born.