TUCSON, Ariz. (AP) — Conservationists say a new proposal for protected habitat for the yellow-billed cuckoo in southern Arizona could impede plans for a mine in that area.

Already, the proposed Rosemont copper mine south of Tucson has faced seven years of delays. The mine was dealt another setback in May, when the U.S. Fish and Wildlife Service announced it was restarting a review examining the project’s effects on endangered species after an ocelot was discovered in the area.