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Mimus saturninus

Chalk-browed Mockingbird


Mimus saturninus

(Lichtenstein, MHC, 1823)
Calandria Grande
Sabiá-do-campo

Family: Mimidae
Order: Passeriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Conservation status according to BirdLife International: Least Concern


Description


A medium-sized and slender mockingbird with an upright posture and a clean, elongated profile. Its plumage is mostly grayish to brownish, with subtle streaking on the breast and flanks and paler underparts. The wings show a contrasting pattern of dark and light patches, especially noticeable in flight. It has a slightly curved, fine bill suitable for probing insects and fruit. The yellowish eyes give it a sharp, alert expression. Juveniles display a duller and less contrasted appearance.

Geographical distribution: It occurs widely across South America, from central and eastern Brazil through Paraguay, Bolivia, Uruguay, and much of Argentina, occupying open and semi-open landscapes. It thrives in dry regions, savannas, pampas and even suburban environments.

Habitat: Inhabits open grasslands, scrublands, forest edges, rural environments and urban areas, where it adapts readily. It is frequently observed in gardens, parks and areas with scattered shrubs, often using exposed branches, posts or human-made structures as vantage points.

Diet: Its diet is omnivorous and opportunistic, including insects, small invertebrates, fleshy fruits, seeds and occasionally human-related food items. It forages mainly on the ground, walking with confident steps and pausing to inspect leaf litter or cavities for prey.

Behavior: A highly territorial species, especially during the breeding season. Its song is strong, varied and persistent, often including imitations of other birds. It tends to be bold and active, regularly perching on elevated lookouts. In human-modified areas it may form small family groups and defend resources vigorously.

Breeding: Builds an open and bulky nest of twigs and plant fibers in shrubs, medium-height trees or artificial structures. The clutch typically contains 2 to 4 eggs. The female performs most of the incubation, while both adults defend the territory and feed the chicks until independence.

Conservation status: Classified as Least Concern (LC) globally, supported by its broad range, adaptability and stable populations. It thrives in altered landscapes and often expands into human-modified areas.


Author of this compilation: EcoRegistros – 08/12/2025





Geographic distribution


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Species photographs

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Foto
Photography ID: 582205
  Adult

Garopaba
Santa Catarina
Brazil
01/23/2024
Gabriel Carbajales
Foto
Photography ID: 499471
  Immature

Vicente López
Buenos Aires
Argentina
07/07/2022
Gabriel Carbajales



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 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
252754513/09/2026ArgentinaCiudad Autónoma de Buenos AiresReserva ecológica costanera sur, Reserva ecologica5Gabriel Carbajales
252745710/09/2026ArgentinaBuenos AiresÁrea Natural Yrigoyen (Yrigoyen y el Río), Vicente López3Gabriel Carbajales
252489429/08/2026ArgentinaNeuquénVilla El Chocón2Gabriel Carbajales
252487129/08/2026ArgentinaBuenos AiresRuta 205, General Alvear4Gabriel Carbajales
252481725/08/2026ArgentinaCiudad Autónoma de Buenos AiresReserva ecológica costanera sur, Reserva ecologica3Gabriel Carbajales
252474423/08/2026ArgentinaBuenos AiresReserva Ecológica Vicente López3Gabriel Carbajales
250408724/07/2026ArgentinaMisionesRuta provincial 17, San Pedro1Gabriel Carbajales
250407724/07/2026ArgentinaMisionesRuta Provincial 20, San Pedro1Gabriel Carbajales
250373721/07/2026ArgentinaMisionesRuta 14, San Pedro1Gabriel Carbajales
250365420/07/2026ArgentinaMisionesRuta 101, Andresito1Gabriel Carbajales
Page 1

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Chalk-browed Mockingbird (Mimus saturninus) – Species account. Accessed from www.ecoregistros.org on 14/09/2026.