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The northern race (D. a. autumnalis) breeds from southern Texas through coastal Mexico and Central America. Pairs most often partner for life and share responsibilities of incubation and brood rearing. Nests are usually located in tree cavities, nest boxes, or on the ground in grassy areas or under brush or cacti near water. Ground nesting is most common where mammalian nest predators are absent. Female black-bellied whistling ducks lay an average of 13 eggs with several females laying in the same nest.
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