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Why cicadas seem so much louder this year
4h ago
Cicadas have favourable weather conditions to thank for their particularly active summer. (ABC Mid North Coast)
If you've stepped outside in recent days, you might have noticed the familiar sound of cicadas buzzing.
And while it's a soundtrack heard every summer, you wouldn't be wrong in thinking the insects have turned the decibels up further this year.
So why are cicadas so noisy this year?
Dr Michael Elias, an affiliate with CSIRO's Australian National Insect Collection, said it just came down to there being
more cicadas this year.
"That's most likely because of the weather conditions we've been having for the last few years," he said.
"In most of eastern Australia, the ground's been pretty wet the last few years, which leads to increased plant growth."
During their juvenile stages, cicadas live underground and feed on sap from plant roots to survive.
"So with more plants being around, there's a lot more food available for them, so you get lower mortality in juveniles."
This year, Australia experienced its wettest January to August period since 2011 and
monthly rainfall records have been shattered in parts of the country.
It's been
the fifth consecutive year of above-average rainfall.
Australia has experienced a string of wet years. (Supplied: Daniel James)