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Black-capped Donacobius

From Opus

Alternative names: Black-capped Mockingthrush; Black-capped Mockingwren

Nominate subspeciesPhoto by BananafishbonesSan Pablo Marshes, Venezuela, March 2012
Nominate subspecies
Photo by Bananafishbones
San Pablo Marshes, Venezuela, March 2012
Donacobius atricapilla

Contents

[edit] Identification

21-22cm (8¼-8¾ in)

  • Shiny black head and shoulders
  • Brown back
  • Olive brown rump
  • Black tail with white tips
  • Blackish wings with white flash
  • Yellow underparts, black bars on its side
  • Bright yellow eyes
  • Dusky green legs
  • Yellow distendable cheek pouch

Juvenile is more dusky, has darker eye, and shows a white line behind the eye.

JuvenilePhoto by Rosmo01Pantanal, Brazil, Nov 19 2013
Juvenile
Photo by Rosmo01
Pantanal, Brazil, Nov 19 2013

[edit] Variation

Subspecies albovittatus shows the white line in all ages

[edit] Distribution

The Black-capped Donacobius ranges from eastern Panama to Colombia and the Guianas to northern Bolivia, Paraguay and north-eastern Argentina.

[edit] Taxonomy

[edit] Subspecies

Subspecies nigrodorsalisPhoto by Luis RLa Rioja Wetlands, San Martín, Peru, March-2018
Subspecies nigrodorsalis
Photo by Luis R
La Rioja Wetlands, San Martín, Peru, March-2018

There are 4 subspecies[1]:

  • D. a. brachypterus :
  • D. a. nigrodorsalis:
  • D. a. atricapilla:
  • D. a. albovittatus:
  • Eastern Bolivia (Beni, Cochabamba and Santa Cruz); adjacent Brazil?

[edit] Habitat

Grass or marsh surrounding pools, lakes and rivers in lowlands.

[edit] Behaviour

The nest is an open cup always with a close relationship to water (near or over). Eggs are a purplish white with reddish or purplish spots and blotches. The female incubates the eggs for 16-18 days. Both sexes, with the assistance of young from a previous, year feed the chicks.

[edit] References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. animals.jrank.org
  3. Birdforum thread discussing a juvenile of this species

[edit] External Links


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