The reproductive system of avian females, such as chickens, typically consists of one functional ovary (the left) and an oviduct, where the egg is formed and laid. In contrast, mammalian females possess two ovaries and a more complex reproductive tract that includes a uterus for embryo development. Additionally, birds lay eggs with hard shells, while mammals give birth to live young, relying on internal gestation. These fundamental differences reflect their distinct reproductive strategies and evolutionary adaptations.
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