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SALT LAKE CITY — The skies fill with an uncountable flock of birds. The sound of the crowd is suspiciously quiet. Dangerous animals are often quiet before striking, one may fear.
This is the stuff of horror films — but it happened in real life in Corona, California, just a couple of weeks ago.
This video shows what happened in the sky above the California home when the birds arrived.
They are called "devil birds" because of their shrill howl and, like a flock of toddlers, they just don't stop. They keep going around and around in circles, leaving a viewer feeling unsettled.
The birds are more commonly known as Vaux's Swifts; a group can be called a scream or a swoop, adding to the creepiness.
Ornithologists say Vaux's Swifts migrate from the Pacific Northwest down to Central America and are known for settling in people's chimneys — and their nightmares. OK, maybe not the last one.
Humans are not at a particularly large risk from Vaux's Swifts, but their droppings can cause a serious fungal infection just like other birds.
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