how do they select their mates?
Males sing songs to attract females.
Northern mockingbird
 Studies have shown that males sing songs at the beginning of breeding season to attract females. Unmated males sing songs in more directions and sing more bouts than mated males.
how long do mocking birds stay in the nest 11 to 13 days why are they called mocking birds? It has mimicking ability. where are they found? North America what colours are their feathers? Gray to brown upper feathers what do they eat? Arthropods, earthworms, berries, fruits, seeds, and occasionally lizards.
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Northern mockingbird [SEP] Sexual selection
Northern mockingbirds are famous for their song repertoires. Studies have shown that males sing songs at the beginning of breeding season to attract females. Unmated males sing songs in more directions and sing more bouts than mated males. In addition, unmated males perform more flight displays than mated males. The mockingbirds usually nest several times during one breeding season. Depending on the stage of breeding and the mating status, a male mockingbird will vary his song production. The unmated male keeps close track of this change. He sings in one direction when he perceives a chance to lure a female from the nest of the mated male.