Pitangus sulphuratus (Linnaeus, 1766)

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 : 434

Pitangus sulphuratus (Linnaeus, 1766)

Figure 8C

Observations. ARGENTINA • Multiple (no sexual dimorphism); Corrientes, La Cruz, Paraje Tres Cerros; 29°06′27′′S, 056°55′54′′W. Observed in all surveys in dif- ferent habitats .

Identification. Voice and bill size allow for separation from Megarynchus pitangua (Linnaeus, 1766)

Myiodynastes maculatus (Müller, 1776)

Observations. ARGENTINA • Multiple (no sexual dimorphism); Corrientes, La Cruz, Paraje Tres Cerros; 29°06′36′′S, 056°55′23′′W. Recorded in summer in forest edges and semi-open habitats .

Identification. Underparts streaked with black; mask

black; tail rufous; supercilium whitish.

Megarynchus pitangua (Linnaeus, 1766) .

Observations. ARGENTINA • Multiple (no sexual dimorphism); Corrientes, La Cruz, Paraje Tres Cerros; 29°06′36′′S, 056°55′23′′W. Migratory in Argentina. Re- corded in summer in various habitats types .

Identification. Differs from Pitangus sulphuratus by its exceptionally larger bill.

Empidonomus varius (Vieillot, 1818)

Observations. ARGENTINA • 2 (no sexual dimorphism); Corrientes, La Cruz, Paraje Tres Cerros; 29°06′ 32′′S, 056°55′40′′W. Recorded in summer in the canopy of forest .

Identification. Similar but smaller and slender than Myiodynastes maculatus .