World’s largest congregation of eagles begins in B.C.

The world’s largest congregation of bald eagles happens on the river in the little community of Harrison Mills

Along the Harrison River in B.C.’s Fraser Valley, thousands of eagles are gathering to gorge on salmon that have reached the spawning ground.

David Hancock, a biologist who has been studying eagles for about 65 years, says the world’s largest congregation of bald eagles happens on the river in the little community of Harrison Mills, about 100 kilometres east of Vancouver.

“Last Saturday morning I did a survey off the river and there were just over 7,000 eagles in the area,” he said in a recent interview. “This is the most we’ve ever had in November.”

About 35,000 eagles gather in the lower Fraser Valley between November and February, and some days about 2,000 to 3,000 raptors move in, Hancock said.

“It’s the biggest single accumulating area because the Harrison River is the single most productive river,” said Hancock. “It’s the only river in Canada called a salmon stronghold river.”

The Harrison River is a tributary of the Fraser River and runs about 18 kilometres in length.

READ MORE: Fraser Valley Bald Eagle Festival explodes in popularity, draws thousands to Mission, Harrison Mills

READ MORE: Record-breaking bald eagle numbers predicted in Harrison Mills this fall

As rivers in Yukon, Alaska and northern British Columbia ice up food supplies freeze too, which forces the eagles south.

“Our salmon are just beginning to die so the table is set down here,” said Hancock.

But there are other factors that contribute to the number of eagles that descend on the area.

“Sometimes the north doesn’t freeze up and the eagles don’t need to come,” he added. “Some years we don’t get as many salmon so the table isn’t as generously set.”

The eagles remain in the area until February although a few thousand may fly further south into Washington, Oregon and California as winter deepens.

Hancock said this year, the Harrison River does not have enough salmon.

“This was not a good year for spawning,” he said.

When the salmon carcasses are gone, he said the eagles feed on spawned herring and oolachin, a smelt.

In about four years the area might not see as many eagles because overharvesting means there won’t be as many salmon carcasses for them to feed on, he said.

Hancock said in the last two decades researchers have learned about the connection between the huge trees in forests in the area and spawned salmon. The carcasses of spawned salmon give nutrition to the soil, he added, which helps trees grow.

“Without those salmon there are no big forests,” Hancock said. “That’s the lesson we learned in the last 20 years of ecology.”

The Canadian Press

Like us on Facebook and follow us on Twitter.

Just Posted

Best in business: North-Okanagan Shuswap companies named top 10 semi-finalists

Small businesses from Salmon Arm, Vernon, Kelowna compete for top spot

White Lake firefighters go beyond call of duty with construction project

Storage shed built for sports equipment in South Shuswap park

Opening date for popular North Shuswap outdoor ice rink delayed

Warmer temperatures have pushed back the openings of several rinks in the region

New safety measures in place as snowmobile season gets underway in Sicamous

VHF radio channel posted at trailheads, assisted in rescue of stranded sledders

Homecoming marked by album release for Salmon Arm duo

A Million Dollars in Pennies to play Classic in new year.

VIDEO: More air-passenger rights go into effect this weekend

The first set of passenger rights arrived in mid-July in Canada

Sagmoen’s lawyer argues ‘abuse of power’ in police search

The trial of Curtis Sagmoen continued at the Vernon Law Courts on Friday

Swoop airlines adds three destinations in 2020 – Victoria, Kamloops, San Diego

Low-fair subsidiary of WestJet Airlines brings new destinations in April 2020

Aid a priority for idled Vancouver Island loggers, John Horgan says

Steelworkers, Western Forest Products returning to mediation

Navigating ‘fever phobia’: B.C. doctor gives tips on when a sick kid should get to the ER

Any temperature above 38 C is considered a fever, but not all cases warrant a trip to the hospital

Salmon Arm history in pictures: Cold snap!

Curling on the Little Lake.

Penticton resident allegedly has rear car tires stolen

The resident woke up today to find their back tires missing and their car on blocks

Salmon Arm dentist follows in family’s footsteps

Dr. Brandon Schiffner of Chu Dental made fellow of Pierre Fauchaud Academy

Woman struck, dog killed after collision on Highway 97

Speed is not believed to be a factor and alcohol has been ruled out

Most Read