THE mystery of how about 100 corellas ended up dead at Nhill Lake is yet to be solved.
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The Nhill Lake committee of management referred the matter to Environment Protection Authority and the Department of Environment, Land, Water and Planning at the start of May after it was unable to assess the cause of the birds' deaths.
The department's Conservation Regulator retrieved a small number of the birds to investigate a possible explanation.
A spokesperson from the Office of the Conservation Regulator said the analysis was ongoing.
"We are still investigating and don't have any new information at this stage," the spokesperson said.
The committee of management originally suspected the birds might have been poisoned.
The committee closed the lake's walking track as a safety measure while it investigated the deaths, but the track reopened a week later after no more dead corellas were found at the site.
Earlier this month, Grampians regional manager for the Conservation Regulator Brian Hamer said it was an offence to use poisons to kill, destroy or take wildlife.
"Severe penalties (including imprisonment and fines) apply to those found guilty of an offence under the Wildlife Act," he said.
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