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Oregon: Keizer lake's dead geese raise alarm - Test positive for rodenticide

Shiloh

Editor, Senior Moderator
Source: http://www.statesmanjournal.com/apps/pbcs.dll/article?AID=/20080415/NEWS/804150341/1001

Keizer lake's dead geese raise alarm

Wildlife officials hope federal lab finds explanation

ALAN GUSTAFSON
Statesman Journal

April 15, 2008

Large numbers of Canada cackling geese keep dying at Staats Lake in Keizer.

It's a mysterious trend that alarms some people who live near the private lake and hate to see the waterfowl sanctuary become a graveyard.

"We feel kind of like it's the canary in the coal mine," Keizer resident Debbie Lowery said. "It's a sign to me that something in our ecosystem is not quite right."

About 60 dead geese were recovered at the lake from Friday through Monday, said Brad Bales, the migratory game bird coordinator for the Oregon Department of Fish and Wildlife.

Laboratory testing of goose carcasses will be done at the National Wildlife Health Center in Madison, Wis. Results from the federal lab should be known within 10 days, Bales said Monday.

Newspaper reports indicate that large die-offs of geese previously occurred at Staats Lake in 2007, 2005, 2001 and 2000.

Bales said the lake itself doesn't appear to be the culprit. Previous investigations linked bird fatalities to aspergillosios, a fungal infection of the lungs, and to pesticide contamination, he said.

"In the past, it has not been anything directly related to Staats Lake," he said. "It's just that it's a heavy goose-roosting area. They may be sick when they get there and that's just where they seem to perish."

Investigators who looked into the earlier cases stopped short of determining where the geese may have ingested lethal amounts of pesticide, Bales said.

"We never really tracked down the exact source, so we don't know where the contamination might have occurred," he said.

Canada cackling geese nest in western Alaska and venture into the Willamette Valley during the winter season. They fly and roost in large flocks, often comprising several thousands of birds.

Lise Payne said she was stunned to come across dozens of dead geese Friday morning as she took her customary walk around the 60-acre lake.

"There were almost 40 birds dead," she said. "I mean, they were just lying side by side."

Payne, who moved with her husband to Keizer from Hawaii in October, said she long will remember the sight of the dead geese, and she's intensely curious about what killed them.

"It's heartbreaking," she said. "I'm still upset. Oregon is supposed to be such a green state."

Lowery, who has lived near Staats Lake for five years, said it's hard to fathom why the prime bird-watching setting has become a recurring place for geese to die.

"Maybe it's a cemetery lake, I don't know," she said. "Why they all flock to our lake to die is kind of weird."

The Keizer case could take on more significance if large numbers of geese turn up dead at other roosting places in the Willamette Valley, Bales said.

"There are a lot of things out there that birds can die of," he said. "We're just concerned about how widespread it is. If this is happening on a big scale, affecting a lot of areas, hopefully we'll be getting that information and be able to kind of pinpoint it a little better."

agustafs@StatesmanJournal.com or (503) 399-6709
 
Re: Oregon: Keizer lake's dead geese raise alarm

Re: Oregon: Keizer lake's dead geese raise alarm

Source: http://www.keizertimes.com/news/story.cfm?story_no=9340

Dead geese at Staats Lake cause alarm

Published: April 18, 2008
By JASON COX
Of the Keizertimes

Yet another goose die-off at Staats Lake is being monitored by state wildlife officials.

The agency reported Tuesday, April 15, that approximately 65 Canadian cackling geese have been found dead near the lake between Friday, April 11, and Monday, April 14.

A similar outbreak last fall affected about two dozen geese and seagulls, with the cause attributed to aspergillosis, a fungal disease.

But Brad Bales, a migratory game bird coordinator for the Oregon Department of Fish and Wildlife, said they aren't sure just yet what caused this particular die-off. Others have been reported in 2007, 2005, 2001 and 2000.

"It's a possibility," Bales said. "With most of these it's hard to speculate."

Bales did say he didn't think the die-off had anything to do with water quality at Staats Lake. Birds were picked up on Friday, Saturday and Monday, and specimens will be delivered to the National Wildlife Health Center in Madison, Wis.

"This is something we've seen out there before," Bales said. "At least in the past nothing has pertained to the water quality at Staats Lake itself. ? Staats Lake is kind of a roosting area for geese to come to at night in large concentrations."

Mike Wolf, a water quality manager for the state's Department of Environmental Quality, said the agency had received a complaint and investigated.

"With the information from ODFW and the city of Keizer we don't show anything that's pointing to an environmental issue ? within the immediate vicinity of the lake," Wolf said.

And with that many geese in one place ? especially during migration seasons ? Bales said dieoffs aren't terribly uncommon.

"They may have just been passing through and picked up something," Bales said.

Along with the U.S. Fish and Wildlife Service, ODFW will continue to monitor the lake. People who find dead birds of any kind are encouraged to call ODFW at (866) 968-2600 if they see multiple birds or see a single dead duck, goose, swan or shorebird.
 
Re: Oregon: Keizer lake's dead geese raise alarm

Re: Oregon: Keizer lake's dead geese raise alarm

Geese deaths a mystery
Investigators want to know why dozens of birds died; pesticide among suspects


[FONT=ARIAL, SANS SERIF]Mitch Lies[/FONT]
[FONT=ARIAL, SANS SERIF]Capital Press[/FONT]

[FONT=ARIAL, SANS SERIF]An Oregon Department of Agriculture pesticides administrator said this week the department is operating under the assumption a pesticide may be involved in investigating the recent death of dozens of geese in Keizer, Ore.

Dale Mitchell, assistant administrator of the pesticide division, said the department is working with state and federal wildlife officials on the case and hopes to know by early next week what caused the 60 or so geese to die.

In the meantime, Mitchell said department investigators are surveying farms in the area for potential off-label use of zinc phosphide, a pesticide widely used to control voles in grass seed fields.

The geese were found at Staats Lake, just north of Salem. They died between April 10 and 14.

The department this week sent samples of the dead birds to its laboratory in Portland. Geese carcasses also were sent to the U.S. Fish and Wildlife Service's National Wildlife Health Center in Madison, Wis.

Toxicology results from the USFWS lab aren't expected until late next week or early the week of April 28.

If pesticide poisoning is found to be the cause, Mitchell said it could lead to further restrictions of above-ground use of zinc phosphide in grass seed.

"Certainly misuses could bring about additional restrictions," Mitchell said.

Growers are restricted from above-ground application of zinc phosphide in grass seed between Sept. 1 and April 30 to protect migratory geese.

Zinc phosphide is a relatively harmless pesticide to most nontarget animals but is highly toxic to geese.

Brad Bales, a wildlife biologist for the Oregon Department of Fish and Wildlife, said he expects the geese died either from aspergillosis, a respiratory disease geese contract from eating moldy grain, or from pesticide poisoning.

Bales said aspergillosis is a frequent cause of geese deaths in the Willamette Valley.

Mitchell said he would be surprised if off-label application of the pesticide is found to have killed the geese, given that the department has conducted significant outreach recently informing farmers of the consequences of misusing zinc phosphide.

The maximum fine the department can issue for off-label use of a pesticide is $10,000 per infraction in cases where the department can prove the misuse was willful and negligent.

Without proof of willful and negligent misuse, the maximum fine is $1,000 for the first violation and $2,000 for subsequent violations.

The department is investigating farms within a 15-mile radius of the lake, Mitchell said.

"We've learned from wildlife biologists that geese will travel from 5 to 15 miles for feeding and come back to a given area to roost at night," Mitchell said.

Bales said it is likely the birds contracted their disease from moldy grain or a pesticide at a location other than the lake.

Other than a dozen or so resident geese that died last summer from ingesting zinc phosphide, geese deaths from pesticide poisoning have been rare in Oregon in recent years.

Jim Stinebaugh, special agent covering the Willamette Valley for the USFWS, said his department decided not to pursue an investigation into last summer's geese deaths, given that federal laws primarily are in place to protect migratory geese. Also, he said, the service expects the pesticide that led to the deaths was applied in accordance with its label.

The geese found dead at Staats Lake have been identified as Canada cacklers, which nest in Western Alaska and spend winters in Oregon.

All geese, whether resident or migratory, are protected under the federal Migratory Bird Treaty Act.

Maximum punishment for killing the birds is six months in jail and a $15,000 fine.

Staff writer Mitch Lies is based in Salem. E-mail: mlies@capitalpress.com.
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[FONT=ARIAL, SANS SERIF]http://www.capitalpress.info/main.asp?SectionID=67&SubSectionID=618&ArticleID=40927&TM=36282.6


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Re: Oregon: Keizer lake's dead geese raise alarm

Re: Oregon: Keizer lake's dead geese raise alarm

Dozens of dead geese found floating on Keizer lake


080415_dead_geese.jpg

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YouNewsTV™

Story Published: Apr 15, 2008 at 4:13 PM PDT
Story Updated: Apr 15, 2008 at 7:34 PM PDT

By Jeff Jaeger and KATU Web Staff

Video
KEIZER, Ore. - People living on Staats Lake recently made a disturbing discovery - a flock of geese dead and floating on the water.
The state is trying to solve the mysterious deaths, which raise a number of questions, including the safety of the lake, but the Oregon Department of Fish and Wildlife said their hands are tied while they wait for test results.
"We couldn't believe what we were seeing because it seemed like every few inches we would come across dead geese," recalled Joanne, who walked around the lake Friday morning.
"We saw two or three dead geese over on the other side of the lake on Friday. I came back Monday morning and as I walked, I counted 38," said Cori Glassey.
According to the Oregon Department of Fish and Wildlife, the final count of dead geese Tuesday morning was 67 floating on the lake.
"They couldn't hold their heads up in the process of dying," said Marie LeRud, who walked with Glassey Friday morning.
"It's a concern," said Assistant District Wildlife Biologist Rick Boatner. "Having that many die since Friday, so that's relatively quick and they all appear to be healthy birds."
This isn't the first time flocks have been found dead at this lake. Boatner said flocks have been found dead at Staats Lake many times. Most recently a flock that was infected with aspergillosios, a fungal infection of the lungs, died on the lake. Boatner attributed the frequency to migratory patterns, not the lake itself.
Right now there is no explanation for this flock's death.
On a lake surrounded by homes the question now is are those birds that are dying bringing disease with them or is it something in the water? "It just makes you wonder," said LeRud.
"Should we be worried?" KATU asked Boatner. "At this time I don't think so," he said. "We don't know enough to make that judgment. It doesn't appear to be anything in the water quality so we'll just wait and see."
According to the Oregon Department of Fish and Wildlife, a half dozen of the dead geese have been sent off to a national lab but they added that die offs like this are not uncommon. "Waterfowl get all kinds of diseases and at anytime in the United States you have a die off somewhere," said Boatner.
Boatner said it could take up to 10 days for the national lab to determine what killed the geese. He said it could be a fungus, possibly a virus, but until then the public is warned not to come in contact with any dead birds in the area.
For more information on what to do if you find a dead bird, visit the Oregon Department of Fish and Wildlife Web site.

http://www.katu.com/news/17756069.html
 
Re: Oregon: Keizer lake's dead geese raise alarm

Re: Oregon: Keizer lake's dead geese raise alarm

Geese deaths a mystery
Investigators want to know why dozens of birds died; pesticide among suspects
But, I ask: are bird flues' tests carried out?
'Cos, one may speculate for weeks around possible poisoning, aspergillosis, avian cholera, newcastle disease, botulism and one of the major suspect will remain in the shadow, at least for me, an old mule.
 
Re: Oregon: Keizer lake's dead geese raise alarm

Re: Oregon: Keizer lake's dead geese raise alarm

Source: http://www.katu.com/news/local/17988364.html

Keizer's dead geese test positive for rodenticide



This is a press release courtesy of the Oregon Department of Fish & Wildlife

Five of six samples taken from geese that died at Staats Lake in Keizer are positive for the rodenticide zinc phosphide, according to results from Michigan State University?s Center for Integrative Toxicology.

Since the first dead geese were collected at Staats Lake on April 11, a total of 67 dead geese have been found. ODFW staff are monitoring the lake almost daily but no dead geese have been found since April 16.

Regulations on zinc phosphide's use are in place to protect wildlife, though it is not clear if misuse of a pesticide product occurred. Zinc phosphide is allowed for use on golf courses and for such crops as wheat, grass grown for seed, nursery products, and berries. The Oregon Department of Agriculture has implemented Special Local Needs Labels (SLNs) that require below ground application on zinc phosphide on grass grown for seed from September 1 through April 30. All pesticide product users are required to take precautionary measures year-round to prevent impacts on wildlife.

The Oregon Department of Agriculture, the Oregon Department of Fish and Wildlife and U.S. Fish and Wildlife Service have been actively investigating the incident since it was first reported. ODA is working with local pesticide dealers to identify recent purchasers of products containing zinc phosphide, which is a Restricted Use Pesticide only for sale to licensed applicators. By interviewing recent purchasers, ODA is attempting to specifically determine how and where these pesticide products have been applied in the vicinity. If ODA identifies an unlawful use, the agency will proceed to take enforcement action.

Zinc phosphide is used to control small rodents such as voles, mice and ground squirrels, particularly in grass fields where such rodents can cause significant damage to crops. It is highly toxic to rodents, birds, fish and other wildlife, although it is not believed to be hazardous to birds of prey that eat rodents that have been killed by it. When zinc phosphide is ingested it is converted by stomach acids to phosphine gas, which acts on the heart, kidney and liver; death occurs from heart and kidney failure. Death usually occurs within 15 minutes to four hours after ingestion of a toxic dose.

Geese, whether resident or migratory, are protected under the federal Migratory Bird Treaty Act. Anyone who finds dead geese or has information on the illegal use of zinc phosphide should contact the Oregon Dept. of Agriculture at (503) 986-4635 or the U.S. Fish and Wildlife Service?s law enforcement office in Wilsonville, (503) 682-6131.
 
Re: Oregon: Keizer lake's dead geese raise alarm - Test positive for rodenticide

There are several grass growing operations in the near vicinity of Keizer. I suspect our culprits may be found there.
 
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