Northern cardinal
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The northern cardinal, also commonly known as the common cardinal, red cardinal, or simply cardinal, is a bird in the genus Cardinalis. It can be found in southeastern Canada, through the eastern Unit
Male northern cardinal in Central Park
Northern cardinal female in CP
Adult male with a grasshopper
Male cardinal feeding on American beautyberry at Okeeheelee Nature Center, Florida
Sexual dimorphism
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Sexual dimorphism is the condition where different sexes of the same species exhibit different morphological characteristics, including characteristics not directly involved in reproduction. The condi
Northern cardinal
…northern cardinal is a mid-sized perching songbird with a body length of 21–23 cm (8.3–9.1 in) and a crest on the top of its head. The species expresses sexual dimorphism: Females are a reddish olive color, and have a gray mask around the beak, while males are a vibrant red color, and have a black mask on the face, as…
Mandarin ducks, male (left) and female (right) depicts the male having more color vibrancy compared to his female counterpart, illustrating the dramatic difference in plumage between them, a manifestation of sexual dimorphism
The peacock, on the right, is courting the peahen, on the left.
Male (bottom) and female mallards. The male mallard has an unmistakable bottle-green head when his breeding plumage is present.
Orgyia antiqua: male with developed wings (left) and female with vestigial wings (right)