Delayed at Vancouver’s airport? Blame the ‘impressive fire ant’ and don’t expect things to get much better
Kelly Sinoski, Postmedia News | March 19, 2015 | Last Updated: Mar 20 7:37 AM ET
VANCOUVER — The invasive fire ant continues to spread in the Lower Mainland, wreaking havoc on Vancouver airport runways and forcing CP Rail to burn the soil on the Arbutus corridor in attempts to eradicate them.
Last summer, several planes hit birds feeding on the fire ants at YVR, forcing a series of short runway closures.
And the pest problem is no longer confined to the common European fire ant.
It has branched out to include a lesser-known species dubbed the “impressive fire ant,” according to Thompson Rivers University entomologist Rob Higgins.
“We’re talking of two different types of fire ants,” said Higgins, noting both fire ants appear to be on the move. “We’ve got them in virtually every municipality.”
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Airport officials were worried about a spate of collisions between small birds, mostly barn sparrows, and planes on the runway during July and August, which forced them to close the runway for five to eight minutes each time to clear away the mess.
“They wanted to know what they’d been eating,” Higgins said. “I looked at their gut contents and they were full of impressive fire ants. They’d been eating a lot of them, especially the winged queens.”
Higgins said it appears the impressive fire ants, who nested in the grasslands around the airport, were attracted to the end of the runway for their mating flights. The swarm of ants then attracted the birds, most of them barn swallows. In one month last summer, he said, there were 50 collisions between birds and planes. One day, there were five runway closures.
David Bradbeer, a runway wildlife specialist at YVR, confirmed the situation. “It is a service inconvenience, but we do close the runway to remove the carcass because we don’t want another bird to be attracted and get hit.”
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http://news.nationalpost.com/2015/03/19/impressive-fire-ants-vancouver/