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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

Last published photographs

Foto
Photography ID: 694118
  Adult

General Pueyrredón
Buenos Aires
Argentina
08/17/2025
José Luis Ianiro
Foto
Photography ID: 694058
  Adult

Mar Chiquita
Buenos Aires
Argentina
08/03/2025
José Luis Ianiro
Foto
Photography ID: 694008
  Adult

General Pueyrredón
Buenos Aires
Argentina
08/02/2025
José Luis Ianiro
Foto
Photography ID: 694001
  Adult

General Pueyrredón
Buenos Aires
Argentina
07/27/2025
José Luis Ianiro
Foto
Photography ID: 693871
  Adult

Mar del Plata
Buenos Aires
Argentina
07/06/2025
José Luis Ianiro
Foto
Photography ID: 646170
  Adult

Mar del Plata
Buenos Aires
Argentina
06/07/2025
José Luis Ianiro
Foto
Photography ID: 645214
  Adult

Mar Chiquita
Buenos Aires
Argentina
03/29/2025
José Luis Ianiro
Foto
Photography ID: 610167
  Adult

Mar del Plata
Buenos Aires
Argentina
09/21/2024
José Luis Ianiro



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Species reports



 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
249401325/10/2025ArgentinaBuenos AiresReserva Natural Privada Paititi, Partido de General PueyrredónJosé Luis Ianiro
249259111/10/2025ArgentinaBuenos AiresReserva Natural Privada Paititi, Partido de General PueyrredónJosé Luis Ianiro
249235620/09/2025ArgentinaBuenos AiresAlbufera Mar Chiquita, Partido de Mar chiquitaJosé Luis Ianiro
249233114/09/2025ArgentinaBuenos AiresReserva Natural Puerto Mar del Plata, Partido de General PueyrredónJosé Luis Ianiro
249213617/08/2025ArgentinaBuenos AiresReserva Natural Puerto Mar del Plata, General PueyrredónJosé Luis Ianiro
249205403/08/2025ArgentinaBuenos AiresCamino ingreso a la Albúfera Laguna Mar Chiquita, Mar ChiquitaJosé Luis Ianiro
249198802/08/2025ArgentinaBuenos AiresLaguna de Punta Mogotes, General PueyrredónJosé Luis Ianiro
249198127/07/2025ArgentinaBuenos AiresLaguna de los Padres, General PueyrredónJosé Luis Ianiro
249161606/07/2025ArgentinaBuenos AiresLagunas de Punta Mogotes, Mar del Plata8José Luis Ianiro
233195907/06/2025ArgentinaBuenos AiresReserva Natural Paititi, Mar del PlataJosé Luis Ianiro
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 25/09/2026.