Rory Saunders, NOAA
207 866-4049

George Liles, NOAA
508 495-2378


April 21, 2005

PDF/Print Version

NMFS Northeast Fisheries Science Center

N         E         W         S

Wildlife Specialists To Launch
Smolt Protection Project

A team of biologists will use noise and lights
to chase cormorants away from the Lower Narraguagus
during the smolt run

Cherryfield, ME -- Fish and wildlife biologists will be working in the lower Narraguagus River in May to protect endangered Atlantic salmon smolts from double-crested cormorants. The biologists will use noises and lights to discourage the birds from congregating and feeding on salmon below the Ice Control Dam in Cherryfield and in the lower Narraguagus River.

A cormorant dries its wings on a rock in the Narraguagus after foraging for salmon smolts.
The Narraguagus is one of just eight Maine rivers known to host a population of naturally reproducing salmon. From mid-April to Mid-June, endangered juvenile salmon (smolts) migrate down river to spend a year or two living in the open ocean. As they migrate down river, the fish are vulnerable to predators – especially cormorants.

To protect the salmon, a team of biologists will use fire cracker shells, pyrotechnics, and lasers to discourage the cormorants from feeding in this five-mile stretch of water. These tools are not harmful to wildlife when used in a controlled manner by trained specialists.

The cormorant displacement project is a multi-year study that began with similar fieldwork in May, 2004. This year the biologists will work from the shore and from a boat in the estuary, beginning a half hour before sunrise and continuing for ten hours, Tuesdays through Fridays. Digital cameras in fixed locations will monitor cormorant abundance in the river and estuary to determine whether, or how quickly, the cormorants return on the days when the biologists are not in the field.

The cormorant displacement is part of the salmon protection effort conducted collaboratively by the Maine Atlantic Salmon Commission, NOAA’s National Marine Fisheries Service, and USDA – Wildlife Services.

A fact sheet is available. For more information, contact Rory Saunders at (207) 866-4049 or

In a 2004 Narraguagus salmon protection effort, USDA wildlife specialist Adam Vashon (USDA) sets off a firecracker called a “screamer” to encourage a flock of cormorants to leave the estuary.

A picture from an automated camera shows a flock of cormorants feeding in the lower Narraguagus on a day when wildlife experts are not working on the river.

NOAA’s National Marine Fisheries Service is dedicated to protecting and preserving our nation’s living marine resources and their habitat through scientific research, management and enforcement. NOAA Fisheries provides effective stewardship of these resources for the benefit of the nation, supporting coastal communities that depend upon them, and helping to provide safe and healthy seafood to consumers and recreational opportunities for the American public.

NOAA, an agency of the U.S. Department of Commerce, is dedicated to enhancing economic security and national safety through research to better understand atmospheric and climate variability and to manage wisely our nation's coastal and marine resources.

On the Web:
NOAA Fisheries:

NOAA/National Marine Fisheries Service * One Blackburn Drive * Gloucester, MA * 01930
Link disclaimer | Email webmaster | Privacy policy |     File Modified Jun 01, 2016