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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 Reserva Natural del Pilar

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 Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
Nicolas Olejnik08/07/2011ArgentinaBuenos AiresReserva Natural del PilarN/AAdultNoNo
Nicolas Olejnik08/04/2011ArgentinaBuenos AiresReserva Natural del PilarN/AAdultNoNo



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 Reports


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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
241163402/01/2026ArgentinaBuenos AiresReserva Natural del Pilar1Franco Montaño Herrero
241350017/12/2025ArgentinaBuenos AiresReserva Natural del Pilar3Gabriel Carbajales
240815814/11/202509:44ArgentinaBuenos AiresDoctor Manuel Argerich 10, Reserva Natural del PilarDolores Fernandez
237822520/10/2025ArgentinaBuenos AiresReserva Natural del PilarDolores Fernandez
180871310/08/2023ArgentinaBuenos AiresReserva Natural del Pilar2Diego Oscar
179094123/06/2023ArgentinaBuenos AiresReserva Natural del Pilar2Gabriel Carbajales
170537615/01/2023ArgentinaBuenos AiresReserva Natural del Pilar2Diego Oscar
163636708/09/2022ArgentinaBuenos AiresReserva Natural del Pilar2Gabriel Carbajales
162028207/08/2022ArgentinaBuenos AiresDoctor Manuel Argerich, Reserva Natural del Pilar1Jorge La Grotteria
162020807/08/2022ArgentinaBuenos AiresDoctor Manuel Argerich, Reserva Natural del Pilar1María Alejandra Sosa
Page 1

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Citation recommended:

EcoRegistros. 2026. Chalk-browed Mockingbird (Mimus saturninus) - Species sheet. Acceded from https://www.ecoregistros.org on 17/03/2026.