As many as 6,000 dead birds have washed up on the shores of Georgian Bay in Ontario, say authorities, who believe botulism may be to blame.
Ontario Provincial Police Constable Peter Leon said Saturday the number of dead waterfowl is estimated to be between 5,000 and 6,000.
The dead birds are scattered along a nearly three-kilometre stretch north of the community of Wasaga Beach, said Constable Leon.