A grouse habitat trade takes shape east of Gunnison

East of Gunnison, nearly 28,500 acres of hay meadow and grazing land are beginning the shift into subdivisions, commercial lots, and a business park under an annexation called Gunnison Rising. Getting here took more than eight years of federal review, because part of the site overlaps designated critical habitat for the Gunnison Sage-Grouse, a bird listed as threatened in 2014 and found nowhere on Earth outside the Gunnison and San Miguel basins.¹ To build on roughly 637 acres of that habitat, the developer, Gunnison Valley Properties, had to secure a Habitat Conservation Plan and an incidental take permit under the Endangered Species Act, the legal mechanism that allows some harm to a protected species in exchange for offsetting measures elsewhere.

Those offsets are now real, mapped land rather than a vague promise. A 420 acre parcel has been donated to Western Colorado University, with a 160 acre conservation easement on it held by Colorado Parks and Wildlife, and a separate 465 acre tract has been newly designated the Tomichi Creek State Wildlife Area. Together they form the tangible other half of the trade: two named parcels with defined protections, tied directly to the acreage now slated for development.

Gunnison Sage-Grouse depend on sagebrush for more than cover. Unlike most grouse, they eat sagebrush leaves right through winter, and hens need large, unbroken stands nearby to raise broods on the insects and forbs that grow among the shrubs. Fragmenting that habitat with roads and buildings, even a modest footprint, can isolate leks, the traditional strutting grounds where males display each spring. Whether the university and wildlife-area parcels functionally replace what's lost at the development site is a question this kind of permit doesn't answer on its own; it establishes the trade, not the outcome for the birds. That answer will come from lek counts in the years after the first roads go in, not from the paperwork.