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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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Records from Luján

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




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Last published photographs

Foto
Photography ID: 668333
  Adult

Luján
Buenos Aires
Argentina
01/18/2026
Silvia Sokolovsky
Foto
Photography ID: 648049
  Adult

Luján
Buenos Aires
Argentina
08/16/2025
Silvia Sokolovsky
Foto
Photography ID: 626391
  Adult

Luján
Buenos Aires
Argentina
03/15/2025
Silvia Sokolovsky
Foto
Photography ID: 554396
  Adult

Luján
Buenos Aires
Argentina
11/05/2023
Silvia Sokolovsky
Foto
Photography ID: 533530
  Adult

Luján
Buenos Aires
Argentina
05/01/2023
Silvia Sokolovsky
Foto
Photography ID: 478132
  Adult

Luján
Buenos Aires
Argentina
01/06/2022
Silvia Sokolovsky
Foto
Photography ID: 468569
  Adult

Luján
Buenos Aires
Argentina
10/30/2021
Silvia Sokolovsky
Foto
Photography ID: 446874
  Adult

Luján
Buenos Aires
Argentina
05/29/2021
Silvia Sokolovsky
Foto
Photography ID: 441375
  Adult

Luján
Buenos Aires
Argentina
04/18/2021
Silvia Sokolovsky
Foto
Photography ID: 434422
  Adult

Luján
Buenos Aires
Argentina
02/21/2021
Silvia Sokolovsky
Foto
Photography ID: 425181
  Adult

Luján
Buenos Aires
Argentina
12/20/2020
Silvia Sokolovsky
Foto
Photography ID: 403519
  Adult

Luján
Buenos Aires
Argentina
07/04/2020
Silvia Sokolovsky



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
241819318/01/2026ArgentinaBuenos AiresRodizio Campo, LujánSilvia Sokolovsky
234285616/08/2025ArgentinaBuenos AiresUniversidad Nacional de Luján, LujánSilvia Sokolovsky
226239915/03/2025ArgentinaBuenos AiresLujánSilvia Sokolovsky
190577405/11/2023ArgentinaBuenos AiresVías del tren, LujánSilvia Sokolovsky
175964201/05/2023ArgentinaBuenos AiresVías del tren, LujánSilvia Sokolovsky
152812006/01/2022ArgentinaBuenos AiresLujánSilvia Sokolovsky
148764230/10/2021ArgentinaBuenos AiresLos Laureles, LujánSilvia Sokolovsky
142258103/07/2021ArgentinaBuenos AiresLuján2Jorge La Grotteria
142236103/07/2021ArgentinaBuenos AiresLuján2María Alejandra Sosa
140836429/05/2021ArgentinaBuenos AiresVías del tren, LujánSilvia Sokolovsky
Page 1

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Citation recommended:

EcoRegistros. 2026. Chalk-browed Mockingbird (Mimus saturninus) - Species sheet. Acceded from https://www.ecoregistros.org on 18/03/2026.