A red-winged blackbird who's taken up residence near the House of Commons has been attacking innocent passersby.
The rogue bird swoops down repeatedly on pedestrians, trying to dive into their hair.
Heather Bradley, who works in the Speaker's office, said Parliament Hill has seen previous bird attacks, notably last summer near the East Block.
And in July 2011, there were reports of red-winged blackbirds attacking people jogging along the Rideau Canal.
Scientists say male red-winged blackbirds fiercely defend their territory in the breeding season, often spending more than a quarter of the daylight hours chasing away other birds and people.