Bird records in the northwestern and central portions of the Amazon basin highlight the needs for inventories and long-term monitoring in the region

Abstract

We describe remarkable bird species records in areas with difficult access, sites monitoring from long-term and human-disturbed regions in the Central and Northwestern portions of the Amazon basin. We presented information for 35 selected species including birds rarely observed in nature (e. g. Crypturelus duidae, Ammonastes pelzelni, Cyanocorax heilprini), species common in other biomes but rare in the Amazon (e. g. Vanellus chilensis, Elaenia flavogaster) and species apparently reported for the first time for the avifauna of Amazonas State (e. g. Hydropsalis roraimae, Myrmeciza longipes). Our records suggest recent colonization of central Amazon by some bird species, likely favored by the increasing environmental degradation in the region. In addition, records of species previously not reported for the Amazonas State reinforce the relevance of inventories in poorly sampled regions in the Amazon basin. These bird records illustrate that biological inventories and long-term monitoring function as complementary strategies for the full understand of distribution and dynamics of the Amazon avifauna.