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Difference between revisions of "Chalk-browed Mockingbird" - BirdForum Opus

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;Mimus saturninus
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[[Image:Chalk-browed_Mockingbird.jpg|thumb|550px|right|Photo &copy; by {{user|Arthur+Grosset|Arthur Grosset}}<br />Barra do Quara, Rio Grande do Sul, [[Brazil]], August 2004]]
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[[Image:Chalk-browed_Mockingbird.jpg|thumb|350px|right|Photo by Arthur Grosset
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;[[:Category:Mimus|Mimus]] saturninus
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<br>Locality: Barra do Quara, Rio Grande do Sul, Brazil]]
 
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The Chalk-browed Mockingbird, as well as many other Mockingbirds, is famous for its huge repertoire of songs and calls, including many imitations of other birds, hence the name Mockingbird.
 
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==Identification==
 
==Identification==
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[[Image:Chalk-browed_Mockingbird_Stanley.jpg|thumb|350px|right|Photo &copy; by {{user|Stanley+Jones|Stanley Jones}}<br /> El 44 Reserva Natural de Tiempo Libre north of Capilla del Monte, Córdoba Province, [[Argentina]], 4 October 2019]]
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23·5–26 cm (9¼-10¼ in)<br />
 
This mockingbird has pale overall colour, with brown wings and tail. A brown stripe crosses its eyes as well. The bird has a chalk (clearer) eyebrow and the white tip on the end of its tail is easily noticed when in flight. Colour variations can happen due to local soils.
 
This mockingbird has pale overall colour, with brown wings and tail. A brown stripe crosses its eyes as well. The bird has a chalk (clearer) eyebrow and the white tip on the end of its tail is easily noticed when in flight. Colour variations can happen due to local soils.
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The Chalk-browed Mockingbird can be easily mistaken with its congener Tropical Mockingbird (''Mimus triurus''). They are very similar in appearance and their ranges meet in some coastal locations, which is where the Tropical is found.
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====Similar Species====
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The Chalk-browed Mockingbird can easily be mistaken for its congener, the [[Tropical Mockingbird]] (''Mimus gilvus''). In the limited area of overlap (only in coastal Brazil), the Chalk-browed Mockingbird can be separated from the Tropical by its browner (less grey) plumage and its stronger post-ocular spot/streak (reduced in the Tropical).
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==Distribution==
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It is widespread and often common in eastern and south-central [[South America]]: found in north-east [[Brazil]], [[Bolivia]], [[Paraguay]], [[Uruguay]] and northern [[Argentina]].  
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==Taxonomy==
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====Subspecies====
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This is a [[Dictionary_P-S#P|polytypic]] species consisting of four subspecies<sup>[[#References|[1]]]</sup>:
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*''M. s. saturninus'':
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:*Southern [[Suriname]] and northern [[Brazil]] (Amapá to south-eastern Pará)
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*''M. s. arenaceus'':
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:*North-eastern [[Brazil]] (Paraíba, Alagoas and Bahia)
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*''M. s. frater'':
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:*Northern [[Bolivia]] to north-eastern and south-western [[Brazil]] (Mato Grosso)
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*''M. s. modulator'':
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:*South-eastern [[Bolivia]] to southern [[Brazil]], [[Uruguay]], [[Paraguay]] and northern [[Argentina]]
  
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==Diet==
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==Habitat==
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Mainly found in open and semi-open areas.
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==Behaviour==
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This bird is commonly found in flocks of up to 13 individuals. While walking on the ground or perched in branches, it often opens and closes its wings partially and rapidly, while singing. This territorial display is often done by the entire group.
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====Breeding====
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It's nest is parasitised by [[Shiny Cowbird]].
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====Diet====
 
Its diet consist basically of fruits and invertebrates, especially insects. Since the seeds are not digested, this mockingbird may help in the dispersal of some plants, e.g. orange and avocado.
 
Its diet consist basically of fruits and invertebrates, especially insects. Since the seeds are not digested, this mockingbird may help in the dispersal of some plants, e.g. orange and avocado.
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====Vocalisation====
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It is famous for its huge repertoire of songs and calls, including many imitations of other birds.
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==References==
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#{{Ref-Clements6thAug19}}#BirdForum Member observations
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{{ref}}
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==External Links==
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{{GSearch|"Mimus saturninus" {{!}} "Chalk-browed Mockingbird"}}
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{{GS-checked}}1
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<br />
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<br />
  
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==Behaviour==
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[[Category:Birds]][[Category:Mimus]]
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This bird is commonly found in flocks of up to 13 individuals. While walking on the ground or perched in branches, it often opens and closes its wings partially and rapidly. The reason of such behaviour is still unknown.
 
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==External Links==
 
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*[http://www.birdforum.net/pp_gallery/showgallery.php?si=Mimus+saturninus&perpage=12&sort=1&cat=all&ppuser=&[email protected]&password=&x=7&y=10 View more images of Chalk-browed Mockingbird in the gallery]
 
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[[Category:Birds]]
 

Latest revision as of 19:54, 23 January 2023

Photo © by Arthur Grosset
Barra do Quara, Rio Grande do Sul, Brazil, August 2004
Mimus saturninus

Identification

Photo © by Stanley Jones
El 44 Reserva Natural de Tiempo Libre north of Capilla del Monte, Córdoba Province, Argentina, 4 October 2019

23·5–26 cm (9¼-10¼ in)
This mockingbird has pale overall colour, with brown wings and tail. A brown stripe crosses its eyes as well. The bird has a chalk (clearer) eyebrow and the white tip on the end of its tail is easily noticed when in flight. Colour variations can happen due to local soils.

Similar Species

The Chalk-browed Mockingbird can easily be mistaken for its congener, the Tropical Mockingbird (Mimus gilvus). In the limited area of overlap (only in coastal Brazil), the Chalk-browed Mockingbird can be separated from the Tropical by its browner (less grey) plumage and its stronger post-ocular spot/streak (reduced in the Tropical).

Distribution

It is widespread and often common in eastern and south-central South America: found in north-east Brazil, Bolivia, Paraguay, Uruguay and northern Argentina.

Taxonomy

Subspecies

This is a polytypic species consisting of four subspecies[1]:

  • M. s. saturninus:
  • M. s. arenaceus:
  • North-eastern Brazil (Paraíba, Alagoas and Bahia)
  • M. s. frater:
  • Northern Bolivia to north-eastern and south-western Brazil (Mato Grosso)
  • M. s. modulator:

Habitat

Mainly found in open and semi-open areas.

Behaviour

This bird is commonly found in flocks of up to 13 individuals. While walking on the ground or perched in branches, it often opens and closes its wings partially and rapidly, while singing. This territorial display is often done by the entire group.

Breeding

It's nest is parasitised by Shiny Cowbird.

Diet

Its diet consist basically of fruits and invertebrates, especially insects. Since the seeds are not digested, this mockingbird may help in the dispersal of some plants, e.g. orange and avocado.

Vocalisation

It is famous for its huge repertoire of songs and calls, including many imitations of other birds.

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. BirdForum Member observations

Recommended Citation

External Links

GSearch checked for 2020 platform.1

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