Northern white-fringed antwren


The northern white-fringed antwren is an insectivorous bird in the antbird family Thamnophilidae. It is a resident breeder in tropical South America and occurs in northern Colombia, northern Venezuela and on the islands of Tobago and Margarita.

Taxonomy

The German ornithologist Jean Cabanis described the northern white-fringed antwren in 1847 and coined its current binomial name Formicivora intermedia. It was formerly considered conspecific with the southern white-fringed antwren but is now often treated as a separate species based on the difference in vocalization.
There are six subspecies:
The northern white-fringed antwren is long, and weighs. The male of the nominate subspecies has grayish brown upperparts, a blackish tail and blackish wings with white spots on the coverts and a white bar. A white extends as a broad stripe down the side of the breast and body. The underparts are black. The female has upperparts similar to that of the male but the underparts are buff with darker spots or streaking on the breast.