DENVER — There's something terrorizing walkers and running at Denver's Sloans Lake and it's probably not what you think.
It's hanging out in the bushes, swooping down and surprising unsuspecting joggers and pedestrians. It's a black bird!
The bird is flapping its wings and making a noise that some people find unnerving.
"It's sort of like a warning but unfortunately some of them don't see it. I think it's scary because birds are kind of scary and I'm not trying to get attacked by a bird."
A bird expert from Denver Audubon Society says it's a male Red-Winged Blackbird.
While he says this behavior isn't common, he says it's not uncommon either, if the bird is protecting a nest.