The Western Amazonian Boundary for Avifauna Determined by Species Distribution Patterns and Geographical and Ecological Features

Table 1

Altitude that species inhabiting Amazonia reach in the west.

Altitude (m)	Colombia (%)	Ecuador (%)	Peru (%)
<500–600	167 (88.35)	113 (67.26)	138 (51.30)
Between 700–1000	6 (2.07)	35 (20.83)	68 (25.28)
>1000	16 (10.58)	20 (11.90)	63 (23.42)