North Fork John Day Wilderness - Greenhorn Unit

Ecosystem Overview

The North Fork John Day Wilderness - Greenhorn Unit ecosystem supports 80 documented wildlife species across 63 taxonomic genera. Located in Grant County, Oregon, this area provides critical habitat with diverse natural communities. The location hosts 17 frequently observed species and 15 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. Compared to nearby Grant County, North Fork John Day Wilderness - Greenhorn Unit hosts 8% more species diversity. This location ranks #68 for species diversity among 100 Grant County County natural areas, placing it in the 32th percentile for biodiversity.

Biodiversity Highlights