NASA Socioeconomic Data and Applications Center (SEDAC) – Hosted by CIESIN at Columbia University

Gridded Species Distribution, v1

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Birds of the Americas Original Grids, v1 (2005 – 2007)

Downloads

These grids are available in .BIL format and are distributed in two forms:

  1. "original grids" that include grid values designating the status of occurrence (e.g., 1 = extant, 2 = possibly present, 3 = probably extinct, etc.), and
  2. "presence grids" that represent the "extant" category of the original grids as a grid value of "1," and all other areas as "0" (see About the Data ).