February 12, 2016 6:12am
Mystery surrounds annual WA bird deaths
Wildlife officers are working to solve a mysterious spate of bird deaths occurring annually in
Pilbara region. Western Australia
Scores of corellas have died each February and March for the past five years, according to Department of Parks and Wildlife officer Chris Roy, who says the event coincides with heavy rainfall followed by warm weather.
"The corellas are either consuming or coming in contact with something, we're still not sure what that is," Mr Roy told AAP on Friday.
He said no other bird species had been affected by the mystery illness - with symptoms that include lethargy, poor motor function and green diarrhoea - while toxicology results were yet to yield conclusive results.
"Some of the birds, with a bit of care and rest, come good but others die and others are humanely euthanased by the vet," he said.
Mr Roy said close to 100 corellas died last year, while 30 deaths had been recorded so far this year, with more test samples recently sent to
DPAW officers had been able to link the deaths to a specific area in the town of
, known as Area W, which included
the local primary school's oval. Tom Price
"Its a little bit of a mystery. We had a lot of tests done last year and they all came back negative for a cause, so we've got on to it early this year," Mr Roy said.