Skip to main content
Updated:
Original:

Lead shot from decades ago likely culprit in poisoning of Blue Lake waterfowl

Small fragments of lead were found in the birds, which conservationists believe are from lead bullets shot decades ago

Earlier this month, visitors at the Minnesota Valley National Wildlife Refuge noticed a concerning trend: dead birds strewn about near Blue Lake in Shakopee.

This week, the refuge reported that the eight birds — including swans, mallards and Canada geese — tested positive for lead poisoning. The necropsy showed what appeared to be lead shot fragments, said refuge manager Sarena Selbo. 

Before the refuge was founded, waterfowl hunting had been popular along the Minnesota River. While lead shot has been banned for waterfowl hunting since the late '80s, fragments can linger at the bottom of lakes, Selbo said. While it's unclear if the birds ingested the lead in Blue Lake, the lake's water levels were recently drawn, which could have shifted some lead shot buried in the bottom of the lake, she said. 

"Lead fragments as small as a couple grains of rice can make a bird ill, causing birds to become very weak, stop feeding and then starve," Selbo said in an email. 

About 100 panfish also died from a lack of oxygen in shallow pockets of the lake — a common occurrence in winter, as ice and snow cover the lake and limit sunlight for the oxygen-producing plants underwater, according to the Minnesota Department of Natural Resources. 

In response, the refuge will increase the water levels "to help plants grow and create quality feeding and resting habitat for waterfowl," Selbo said in an email.  

The Minnesota Pollution Control Agency said it doesn't track the number of lakes with incidences of lead-poisoned waterfowl. However, the issue is common enough for the agency to launch a "Get the Lead Out" campaign, which encourages fishers to switch to non-lead tackle. According to the MPCA, national research indicates lead poisoning accounts for about 14 percent of loon deaths in Minnesota.

In recent years, Vadnais Lake has also reported lead-poisoned waterfowl. 

In January, Minnesota state Sen. Charles Wiger and Rep. Peter Fischer, both Maplewood Democrats, introduced a bill to ban the sale and use of lead jigs and sinkers. 

Wiger told the Star Tribune earlier this month he's optimistic about gaining bipartisan support, as last year the Legislature passed a ban on most industrial use of trichloroethylene. 

"We hear a lot from residents worried about the swans. They are a charismatic species and people see them," Dawn Tanner, a conservation biologist and program development coordinator with the Vadnais Lake Area Water Management Organization, told the Star Tribune. "A legislative change is probably the push that is needed."

Correction: A previous version of this story incorrectly spelled Selbo's last name. 

Next Up

Screen Shot 2021-11-25 at 7.53.37 AM

Another 5,000 lbs. of goldfish removed from Carver County lakes

It all likely stemmed from people dumping their pets into local waters a few years ago.

Rosaleia Shelton

Appeal to find 19-year-old missing from Bloomington

The teen left her home on Monday afternoon.

hospital, emergency room

Deaths of twin fetuses after woman was shot ruled a double homicide

The woman was shot in the abdomen in mid-September.

Payton Willis / Gopher Basketball

Gophers improve to 5-0 with win over Jacksonville

The Gophers are establishing momentum early in the season.

Anthony Edwards

Ant's massive slam leads Timberwolves to fifth straight win

The dunk didn't count, but provided the highlight of the night.

Cam Talbot / Minnesota Wild

WIld arrive late, Cam Talbot stays on point to beat Devils

Despite a 30-minute delay, the Wild picked up a 3-2 victory.

Screen Shot 2021-11-24 at 4.10.54 PM

Appeal to find 35-year-old missing from Oak Grove home

Police say he's not believed to be in danger.

vote, election

7 MN Republicans urge states to audit 2020 election results

There has been no evidence of significant fraud in any single U.S. state.

child vaccine pexels

How many MN kids age 5-11 have received a COVID vaccine dose?

The governor says the state has one of the highest child vaccination rates in the U.S.

police lights

Seven juveniles arrested in connection with stolen vehicles in Woodbury

Woodbury authorities have issued a warning following a spate of auto thefts.

Related

Second bald eagle dies of lead poisoning at Raptor Center

The center has treated several other eagles for lead poisoning recently.

mn dnr - boat launch - low water levels

Water levels on MN lakes could present challenges for waterfowl hunters

Boat launches are harder to access for larger boats, and low water levels mean obstructions are closer to the surface.

Swans at Sucker Lake in Vadnais Heights.

Lead fishing sinkers blamed in deaths of trumpeter swans

Several dead swans were found at Sucker Lake in Vadnais Heights this month.

Water Gremlin

MN company ordered to shut down after children suffer lead poisoning

Elevated levels of lead were found in the children of Water Gremlin employees.

Rescued eagle had lead poisoning, leads to concern over hunting ammunition

An injured eagle has reignited the debate over the use of lead ammunition while hunting.

Removing lead from MN water would cost $4 billion, but save $8 billion

A report highlights just how much lead there is in Minnesota's water systems.