We reviewed the occurrences and distributional patterns of migratory species of birds in Brazil. A species was classified as migratory when at least part of its population performs cyclical, seasonal movements with high fidelity to its breeding grounds. Of the 1,919 species of birds recorded in Brazil, 198 (10.3%) are migratory. Of these, 127 (64%) were classified as Migratory and 71 (36%) as Partially Migratory. A few species (83; 4.3%) were classified as Vagrant and eight (0,4%) species could not be defined due to limited information available, or due to conflicting data.

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The Pyrrhura lepida species complex currently consists of four taxa: P. l. lepida, P. l. coerulescens, P. l. anerythra, and P. perlata. It occurs south of the Amazon River, and is distinguished within the genus by a dark red upper tail and black under tail, as well as by having wider rectrices. The aim of this paper was to describe the morphological variation present in these taxa, and to revise their taxonomy and geographic distribution. Morphometric data revealed the absence of sexual dimorphism and did not allow the diagnosis of any taxon. Furthermore, morphological analysis, according to patterns of plumage of 174 specimens, resulted in the recognition of only three valid taxa that should be treated as full species: P. perlata, P. anerythra and P. coerulescens. A small hybrid zone between the latter two species was detected west of the mouth of the Tocantins River, and its establishment seems to be related to an already known geological shift in the course of the Tocantins River.

JustificativaNomes comuns maçarico-tereque (Português), Terek Sandpiper (Inglês), Andarríos del Terek (Espanhol) Notas taxonômicas Distribuição global Distribuição nacional Xenus cinereus (Guldenstadt, 1775) Categoria: Não Aplicável (NA) Data da avaliação: Out/2017Xenus cinereus apresenta poucos registros no país, sendo considerado vagante. Representado, no Brasil, por parcela quase insignificante da população global. Desta forma, X. cinereus foi categorizada como Não Aplicável (NA).