Three environmental groups are asking a federal judge to stop a Coast Range timber sale.
Members of Cascadia Wildlands, Oregon Wild and Umpqua Watersheds say the proposed sale would harm spotted owl habitat and kill more than a dozen of the threatened birds.
The suit was filed in U.S. District Court in Eugene against the federal Bureau of Indian Affairs.
The Eugene Register-Guard reports that the B.I.A. plans to log more than 500 acres in the Middle Fork Coquille River watershed, in eastern Coos County.
That area is home to both the northern spotted owl and the marbled murrelet, which are both on the endangered species list.
The sale is expected to produce 14 million board feet of timber.
Environmentalists say that is well above the timber harvests called for in management plans for the area.
There is no trial date set yet.
This story originally appeared on Oregon Public Broadcasting.