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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 San Isidro

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: 162736
  Adult

San Isidro
Buenos Aires
Argentina
08/06/2016
Carlos Enrique Alvarez
Foto
Photography ID: 153273
  Adult

San Isidro
Buenos Aires
Argentina
06/05/2016
Diego Alfonso Rosa
Foto
Photography ID: 99590
  Adult

San Isidro
Buenos Aires
Argentina
05/25/2015
Diana Weyland



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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
229969522/04/2025ArgentinaBuenos AiresBosque Alegre, San Isidro1Gabriel Carbajales
210230608/07/2024ArgentinaBuenos AiresBosque Alegre, San Isidro3Gabriel Carbajales
194493012/01/2024ArgentinaBuenos AiresBosque Alegre, San Isidro4Gabriel Carbajales
179136209/07/2023ArgentinaBuenos AiresBosque Alegre, San Isidro4Gabriel Carbajales
171446130/01/2023ArgentinaBuenos AiresBosque Alegre, San Isidro3Gabriel Carbajales
164101516/09/2022ArgentinaBuenos AiresBosque Alegre, San Isidro2Gabriel Carbajales
166325911/09/2022ArgentinaBuenos AiresParana y el Río, San Isidro4Jorge Fernando Di Laudo
155602121/02/2022ArgentinaBuenos AiresBosque Alegre, San Isidro5Gabriel Carbajales
153677020/01/2022ArgentinaBuenos AiresBosque Alegre, San Isidro5Gabriel Carbajales
147837409/10/2021ArgentinaBuenos AiresBosque Alegre, San Isidro3Gabriel Carbajales
Page 1

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Citation recommended:

EcoRegistros. 2026. Chalk-browed Mockingbird (Mimus saturninus) - Species sheet. Acceded from https://www.ecoregistros.org on 19/03/2026.