A 76-year-old man riding his bike in an area south of Sydney, Australia, died after he swerved to miss a flying magpie.
The man, who was not identified, crashed into a fence post and was thrown to the ground, CNN reported.
Doctors said he had serious head injuries and was eventually flown to a Sydney hospital, where he later died.
But experts say that this is the time of year when the birds start swooping to protect their young from what they think are threats and the birds are very territorial, 7 News reported.
They're so vicious that Australians will walk around with sticks and bike riders add zip ties that stick up on their helmets to prevent the birds from attacking.
They have very sharp beaks and attack suddenly.
A toddler in a carriage was nearly blinded by one of the birds last year.
Nothing can really be done to the animals since they're a protected species in Australia, CNN reported.
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