Amanda Brittain, the director of communications with B.C. Egg, said the affected flock was a turkey farm in west Abbotsford.
She said anytime the virus is detected, the entire flock must be humanely euthanized to prevent spread.
Avian flu outbreak spreads to Vancouver Island
In this case, Brittain said the farmer lost about 4,000 birds.
"It's very concerning to farmers ... this farmer would have lost his or her whole flock," said Brittain.
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