Dead birds found on Beach Strip

scotto

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Oct. 21, 01:03 EDT
Dead birds found on Beach Strip
Heavy loss of 350 ducks probably caused by botulism
Daniel Nolan
The Hamilton Spectator


Botulism is probably the cause of a large bird kill along the shores of Lake Ontario near Confederation Park.

Councillor Chad Collins, a member of the Hamilton Conservation Authority, said last night city staff had collected 350 dead birds along the shoreline between the Burlington Canal lift-bridge and the park.

A spokesperson for the Ontario Ministry of Natural Resources, which will likely have the birds tested at a laboratory at the University of Guelph in the next few days, says botulism has been the cause of similar bird kills in Ontario.

"Our staff would have to look into it," said Anne-Marie Flanagan, spokesperson for Natural Resources Minister David Ramsay.

"Sometimes when you get large kills of fish or birds it's botulism, but we would have to do some testing. Obviously, it's something that is a concern. We want to make sure everything is fine."

Collins said staff began finding the dead birds -- all believed to be scaups, which are a type of duck -- Tuesday while they were doing routine patrols of the shoreline along the Hamilton Beach Strip. They patrol the beach collecting birds, such as cormorants, which die when they collide with nearby hydro towers.

On Tuesday, they had collected 250 dead ducks. Yesterday, they added 100 to the pile at a site on Van Wagner's Beach. The birds have all since been removed by city animal control officials.

Collins said the city has been told by bird specialists the kill is not unusual this time of year, but the specialists have been surprised by the number. He said the city has been told there were similar bird kills in other parts of Ontario this year, such as in the Kincardine area.

Scientists suspect zebra mussels, quagga mussels and gobies are linked to the death of birds across the Great Lakes. All three species were introduced to the Great Lakes from the Black and Caspian seas.

The mussels are believed to concentrate the botulism, which has always been in the lakes. Gobies, a fish species, have been found to carry botulism after eating the mussels. Scaups, a diving duck, have been known to eat gobies and have turned up dead in other parts of Ontario.

dnolan@thespec.com

905-526-3351

(Image)
Cathie Coward, the Hamilton Spectator
Sharla Sutherland, an animal control officer, with one of approximately 350 ducks, believed to be scaups, that washed up on the Hamilton Beach Strip. The bird is marked with red spray paint.
 

scotto

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Update From the Spec.

Dec. 10, 12:35 EDT
Botulism kills 800 birds near Confederation Park
Ducks tested had eaten contaminated fish called gobies
Daniel Nolan
The Hamilton Spectator
Botulism killed about 800 birds collected in October along the shores of Lake Ontario near Confederation Park.

Results from tests conducted by the Canadian Wildlife Service on three birds -- two long-tailed ducks and a surf scoter, a type of duck -- confirmed they died of Type E Botulism.

Botulism has been found to be the cause of similar bird kills along the Great Lakes for the last few years.

Test results from eight other species were inconclusive, but CWS informed the City of Hamilton, the Hamilton Conservation Authority and the Ontario Natural Resources Ministry yesterday the cause of death is "probable Type E Botulism." Those birds were three white-winged scoters, three loons, one canvasback duck and a dunlin, which is a shoreline wading bird.

The dead birds were collected Oct. 17 and Oct. 20 by city staff along Burlington Beach, Hamilton Beach and Van Wagner's Beach. Staff picked up 763 long-tailed ducks, 16 white-winged scoters, eight loons and one each of a surf scoter, a canvasback duck and a dunlin.

CWS and MNR researchers believe the birds picked up the botulism by eating a contaminated fish species called gobies. The gobies, in turn, acquired the toxin by eating zebra mussels, quagga mussels and small sea creatures on the bottom of the lake that carry the poison. Gobies and the mussels were introduced to the Great Lakes from the Black and Caspian seas several years ago.

Officials from both agencies don't see the phenomena disappearing any time soon, but they are doing research with U.S. officials to try and get a better understanding of it and track the goby invasion.

"There's too many gobies to do anything about this," admitted Jeff Robinson, a biologist with the CWS office in London, Ont.

"Right now, we don't see any remedy to the situation because we've got these exotic species. They weren't introduced on purpose, but they did get here."

Robinson and MNR spokesman Bill Murch said there is no health threat to humans, but they caution people to make sure pets being walked along beaches do not eat dead birds.

"They can get lots of things from eating dead stuff," said Robinson.

"They could be poisoned by eating a bird that died from botulism."

A bird shot by a hunter in the wild can have botulism removed from it by cooking.

"The toxin is destroyed by heating," said Robinson. "It's the same thing when you cook fish."

The CWS asks if anyone picks up a dead bird along a shoreline to report it to 1-800-327-2263.

dnolan@thespec.com

905-526-3351
 
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