Polystictus pectoralis (Vieillot, 1758)

Fernandez, Juan Manuel, Thomann, Luz, Fandiño, Blas, Cajade, Rodrigo & Hernando, Alejandra, 2021, An annotated checklist of birds of Paraje Tres Cerros, Corrientes province, Argentina, Check List 17 (2), pp. 415-443 : 433

Polystictus pectoralis (Vieillot, 1758)

Figure 7D

Observations. ARGENTINA • 1♀; Corrientes, La Cruz, Paraje Tres Cerros; 29°09′33′′S, 056°51′51′′W. A male observed in August and October 2014 in grasslands of Cerro Capará .

Identification. Rare in the study area. Crown grey to blackish, finely striped with white; breast and flanks cin- namon; bill and legs black. A small bird; similar in size to Culicivora caudacuta (Vieillot, 1818) , but this species has a conspicuous, white supercilium.

Euscarthmus meloryphus (Wied, 1831)

Observations. ARGENTINA • Multiple ♂ and ♀; Cor- rientes, La Cruz, Paraje Tres Cerros; 29°06′33′′S, 056° 55′39′′W. Recorded in forest near Cerro Nazareno .

Identification. Very small; face, crown, and wing bars rufous; throat and underparts grayish.