invasive species

Fast-spreading invasive aquatic mussels are hitching rides on boats, kayaks and jet skis. So, people are working to keep them out of the Columbia River Basin, the only major river basin in the U.S. without an established quagga mussel population.

Northern pike have massive, toothy jaws and even bigger appetites. The invasive fish have been known to even chomp down on bats and ducks. So, it’s no wonder biologists are worried about salmon – and the billions of dollars that have been poured into their recovery.

Shellfish growers in Willapa Bay in southwest Washington, the self-styled "Oyster Capital of the World," are alarmed by an invasion of potentially destructive non-native European green crabs. Some are asking for an all-out trapping offensive to corral the invasive species.

As spring wakes up in Oregon and Washington, so do invasive Japanese beetles. Larvae living among the roots of neighborhood lawns become adults and get up to the surface – ready for a meal, some mating and egg laying.

Efforts to keep a toothy, invasive fish behind Grand Coulee Dam are paying off.

The eye-catching scenes of mountain goats flying through the air under helicopters, riding in refrigerated trucks and taking ferries to new homes are done…

Wildlife biologists have relocated the first two dozen of hundreds of non-native mountain goats slated for removal from Olympic National Park. The…

As boat inspections in the Northwest ramp up for summer, an inspection at the Washington-Idaho border near Spokane last week turned up highly invasive…

Olympic National Park is inching ahead on a plan to reduce or eliminate its population of non-native mountain goats. A draft plan released Monday for…

The Oregon Department of Agriculture said it's recorded the largest Japanese beetle infestation in the state's history. But officials hope to stop the…