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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: 692575
  Adult

Navarro
Buenos Aires
Argentina
06/23/2026
Hernán Tolosa
Foto
Photography ID: 686862
  Adult

Magdalena
Buenos Aires
Argentina
05/14/2026
Hernán Tolosa
Foto
Photography ID: 669396
  Adult

General Conesa
Río Negro
Argentina
01/06/2026
Hernán Tolosa
Foto
Photography ID: 669385
  Adult

Garayalde
Chubut
Argentina
01/05/2026
Hernán Tolosa
Foto
Photography ID: 669384
  Juvenile

Garayalde
Chubut
Argentina
01/05/2026
Hernán Tolosa
Foto
Photography ID: 562623
  Adult

San Miguel del Monte
Buenos Aires
Argentina
01/01/2024
Hernán Tolosa
Foto
Photography ID: 552175
  Adult

San Miguel del Monte
Buenos Aires
Argentina
10/07/2023
Hernán Tolosa
Foto
Photography ID: 535373
  Adult

San Miguel del Monte
Buenos Aires
Argentina
05/13/2023
Hernán Tolosa
Foto
Photography ID: 521073
  Adult

Zenón Videla Dorna
Buenos Aires
Argentina
01/08/2023
Hernán Tolosa
Foto
Photography ID: 493601
  Adult

San Miguel del Monte
Buenos Aires
Argentina
04/24/2022
Hernán Tolosa
Foto
Photography ID: 402392
  Adult

San Miguel del Monte
Buenos Aires
Argentina
06/26/2020
Hernán Tolosa
Foto
Photography ID: 402242
  Adult

San Miguel del Monte
Buenos Aires
Argentina
06/28/2020
Hernán Tolosa



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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
252916810/09/202610:34ArgentinaBuenos AiresRuta sin nombrar3Hernán Tolosa
252135004/09/2026ArgentinaBuenos AiresReserva Natural Laguna de San VicenteHernán Tolosa
251250119/08/2026ArgentinaBuenos AiresLaguna Las Mulitas, 25 de MayoHernán Tolosa
249903423/07/202610:46ArgentinaBuenos AiresGorchs1Hernán Tolosa
248929303/07/202615:42ArgentinaBuenos AiresRuta sin nombrar3Hernán Tolosa
248921402/07/2026ArgentinaBuenos AiresVías del ferrocarril desde Lobos hacia el arroyo Las Garzas. Coordenadas -35.244410, -59.115503, LobosHernán Tolosa
248927729/06/202608:35ArgentinaBuenos AiresRuta Nacional 32Hernán Tolosa
248621323/06/2026ArgentinaBuenos AiresLaguna De Navarro, NavarroHernán Tolosa
248196912/06/202612:54ArgentinaBuenos AiresCamino sin nombrar3Hernán Tolosa
248019131/05/2026ArgentinaBuenos AiresPesquero 25 de Mayo, MagdalenaHernán Tolosa
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 22/09/2026.