As a medium-sized aquatic bird, the night heron ( scientific name : Nycticorax nycticorax ) has a body length of about 46 to 60 centimeters, a weight of about 700 grams, a pointed and slender beak, a short neck connecting the head and body, a thick and chubby body, and long legs. The night heron is male and female of the same color, with young birds having brown longitudinal stripes and speckles, yellow irises, and adult birds turning red. The legs also change from yellow green to reddish yellow, and the young birds do not grow complete adult feathers until the third year.

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