A huge flock of birds closed part of a motorway in Austin, Texas.
In a video that was posted online, the birds can initially be seen perched on railings but as the traffic passes by, they suddenly take flight.
The flock spreads and fills the skies above, creating silhouettes against the sun, the Mirror reported.
The eyewitness who filmed the sight said: “Cars had to move out of the lane because there were so many. It was really cool but kind of scary.”
It is not clear what birds were involved but huge murmurations of starlings are often seen in the UK.