The grey antbird is 14.5 cm (5.7 in) in length. The male is grey with a darker grey tail. It has white spotting on the
wing coverts and broad white spots near the tips of the tail feathers. The female is olive brown above, pale ochre brown below and has a darker brown tail. The white spotting on the wings and on the tail of the female is similar to that on the male.[2]
Taxonomy
The grey antbird was
described by the English zoologist
Philip Sclater in 1857 from a specimen obtained near the
Rio Napo in Ecuador. He coined the
binomial nameFormicivora cinerascens.[3][4] The specific epithet is
Late Latin meaning "ashen".[5] This antbird is now placed in the
genusCercomacra that was introduced by Sclater in 1858.[6][7]
^Ridgely, Robert S.; Tudor, Guy (2009). Birds of South America: Passerines. Helm Field Guides. London: Christopher Helm. p. 355, Plate 28.1.
ISBN978-1-408-11342-4.
^
abGill, Frank; Donsker, David;
Rasmussen, Pamela, eds. (January 2021).
"Antbirds". IOC World Bird List Version 11.1. International Ornithologists' Union. Retrieved 6 July 2021.