Animal experts in Mexico have a bona fide mystery on their hands after hundreds of blackbirds suddenly came plummeting from the sky.
The unexplained phenomenon occurred last week in Chihuahua, where hundreds of yellow-headed blackbirds started raining down on the city and crashing into the ground, a video of the incident reveals. Although some of the birds got back up and flew away, dozens didn't survive the fall, leaving the streets and sidewalks strewn with dead birds.
Authorities say the blackbirds were in the process of migrating from Canada to Mexico when they suddenly collapsed.
WARNING....THIS VIDEO MAY CONTAIN GRAPHIC IMAGES THAT SOME VIEWERS MAY FIND DISTRESSING