Undulated Antshrike

Frederickena unduligera

Identification

Bill is very stout.
Male: Black throat and upper breast black, rest of body black with faint wavy white bars. Female rufous barred black, about equal with on upper and narrower black on lower parts; tail black and grey.

Geographic variation mostly in female plumage and voice. Female F. u. fulva has a more reddish, warmer color than the other subspecies and she is more heavily barred.

Distribution

Bolivia, Brazil, Colombia, Ecuador, and Peru; everywhere scarce and occurs in a patchy distribution.

Taxonomy

Closely related to Black-throated Antshrike.

Subspecies^[1]

There are 4 subspecies:

• F. u. unduligera:

• North-western Amazonian Brazil on upper Rio Negro

• F. u. fulva:

• South-eastern Colombia to eastern Ecuador and eastern Peru (north of Río Marañón)

• F. u. diversa:

• Eastern Peru (south of Río Marañón) and north-western Bolivia (southern La Paz, southern Beni)

• F. u. pallida:

• South-western Amazonian Brazil south of the Amazon; northern Bolivia (?)

There is a proposal to split Fulvous Antshrike (Frederickena fulva) as a monotypic species while leaving the other three subspecies together in this species.

Habitat

Moist lowland forests.

Behaviour

Unobtrusive: generally difficult to detect.

References

1. Clements, JF. 2009. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2009. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.
2. Birdforum thread discussing the taxonomy of Undulated Antshrike
3. Ridgely and Tudor 2009. Field guide to the songbirds of South America - The Passerines. University of Texas Press. ISBN 978-0-292-71979-8
4. SACC proposal to split Fulvous Antshrike

• List of references

Recommended Citation

• BirdForum Opus contributors. (2024) Undulated Antshrike. In: BirdForum, the forum for wild birds and birding. Retrieved 13 May 2024 from https://www.birdforum.net/opus/Undulated_Antshrike

External Links

Search for photos of Undulated Antshrike in the gallery