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A photo of a Northern Mockingbird (Mimus polyglottos)
Northern Mockingbird

Northern Mockingbird

Mimus polyglottos

The Northern Mockingbird (Mimus polyglottos) is a medium-sized mimid with a remarkable ability to mimic a vast array of sounds. It has a slender build, with long legs and tail, and exhibits a gray to brown plumage on its upper parts, contrasting with a paler belly. Notably, its tail and wings bear white patches that flash conspicuously during flight.

Identification Tips

Adult Northern Mockingbirds have a light green-yellow or yellow iris, though orange has been observed. The bill is black, with a brownish base. Juveniles can be identified by their streaked backs and spotted chests, with a gray or greenish iris. Males are slightly larger than females, with a wingspan ranging from 31 to 38 cm and a body mass between 40 and 58 grams.

Habitat

This species thrives in open areas with sparse vegetation, such as parks, gardens, desert scrub, and chaparral. It avoids densely forested regions and prefers habitats with short grass for foraging.

Distribution

The Northern Mockingbird is found across southeastern Canada, the United States, northern Mexico, the Bahamas, the Cayman Islands, and the Greater Antilles. It is a year-round resident in most of its range, but northern populations may migrate southward during harsh weather.

Behaviour

The Northern Mockingbird is known for its intelligence, with studies showing its ability to recognize individual humans, especially those perceived as threats. It demonstrates strong site fidelity, often returning to successful breeding spots. In urban environments, it adapts well, showing higher survival rates and a tendency to reuse successful nesting sites.

Song & Calls

The Northern Mockingbird's repertoire is extensive, with males singing to attract mates and establish territory. Females also sing, though less frequently. The species mimics a variety of sounds, including other bird species and artificial noises. Calls include the nest relief call, hew call, chat or chatburst, and the begging call, each serving different communicative purposes.

Breeding

Mockingbirds are monogamous, with both sexes participating in nest building, which is usually situated 3 to 10 feet above ground. The female lays 3 to 5 light blue or greenish eggs, speckled with dots. Both parents feed the chicks, and the family aggressively defends the nest against intruders.

Similar Species

The Northern Mockingbird can be confused with its closest living relative, the Tropical Mockingbird (Mimus gilvus), but can be distinguished by its larger size and more extensive white wing patches.

Diet and Feeding

An omnivore, the Northern Mockingbird consumes insects, fruits, seeds, and occasionally small crustaceans and lizards. It adapts its diet seasonally, favoring animal prey during breeding and fruits in fall and winter.

Conservation Status

The International Union for Conservation of Nature (IUCN) lists the Northern Mockingbird as Least Concern, indicating a stable population without significant threats to its survival.

Northern Mockingbird Sounds



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