ALBUQUERQUE, N.M. — Environmentalists say the federal government's current plan for re-establishing the Mexican gray wolf in the wild is outdated and legally invalid and petitioned the U.S. Fish and Wildlife Service to revise it.

"We're managing a very imperiled population of wolves based on planning that's over 20 years old and didn't imagine actual recovery goals — the threshold at which we can say we've done enough and we can take the animal off the (endangered species) list," said Rob Edward, director of carnivore recovery for WildEarth Guardians in Denver.

The current recovery plan was completed in 1982 — 16 years before any wolves were released into the wild in the Southwest. It focused heavily on captive breeding and said little about how to manage wolves in the wild or the process of developing a viable wild population, said Michael Robinson of the Center for Biological Diversity in Pinos Altos.

The center, WildEarth Guardians and the Rewilding Institute on Wednesday petitioned Interior Secretary Dirk Kempthorne and Fish and Wildlife Service Director Dale Hall for clear goals and deadlines for delisting the species with attention to the wolves' genetic pool.

Amendments to the Endangered Species Act in 1988 established standards for recovery plans that were not met in the 1982 Mexican wolf plan, the groups said.

Edward said the plan should be redone before the government revises policies governing the reintroduction program.

"It's a fool's errand to base new policies on a plan that has been gathering dust for over two decades," he said.

Fish and Wildlife also wants to redo the recovery plan, said Elizabeth Slown, spokeswoman for the agency's Albuquerque regional office. But, she said, that's being held up by competing judges' orders over the larger gray wolf species elsewhere in the nation.

"Those need to be sorted out a little more carefully before we take up the recovery plan again," she said. She had no idea when that can be done.

The Mexican gray wolf, a subspecies of the gray wolf, was exterminated in the wild in the Southwest by the 1930s.

In March 1998, the government began reintroducing wolves along the Arizona-New Mexico border in a 4 million acre-plus territory interspersed with forests, private land and towns.

The wolves in Arizona and New Mexico have been designated as a "nonessential, experimental population." That gives Fish and Wildlife greater flexibility to manage them under the Endangered Species Act and allows permanent removal — by capturing or killing a wolf — after three confirmed livestock kills in a year.