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breed - v. to produce young animals, birds and so on, or to produce offspring by sexual reproduction
breeding ground – n. a place where animals go to breed
chick - n. a baby bird
scale - n. the size or level of something especially in comparison to something else
incubate - v. to sit on eggs so that they will be kept warm and will hatch (break open and produce young)
refuge - n. a place that provides shelter or protection
