Answers are grounded in this paper and cite their sources.
Reported here are primary avian geographical records for the nation of Peru and for the western declivity of the Peruvian Andes. Not previously encountered anywhere in Peru is Myrmeciza exsul (Chestnut-backed Antbird), a periorbitally blue thamnophilid possessing apically maculate tectrices. This species was observed on the western inclination of the Andean Mountains in Peru. Recorded primally on the occidental Andean declivity of Peru were (1) a representative of Myiodynastes manifesting a flavous coronal vitta that is centrally ardent (Golden-crowned Flycatcher);
No takes yet. Share an insight, caveat, or question.
A. Gaylon Cook (2012) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: