No... these aren't storm clouds. They're tiny songbirds known as starlings. Starlings flock together in thousands. Their shifting movements are called "murmurations ...

It was Friday afternoon and she and her friends were driving to visit her parents when they suddenly spotted a massive storm-cloud hovering over the sky in Sorocaba, a city in the Brazilian state ...

"That's cold air coming down, out of the storm itself, moving ahead of [it]." He said other types of clouds, like lenticular clouds, could also present in a unique shape — but this particular ...