Murmuration

Cara, não tem como explicar. Eu só sei que a coisa mais linda que eu já vi ! Veja o vídeo:

Esse é o "Starling" que no Brasil é chamado de
"estoninho" ou "quebra-mar"

• Murmuration

The starlings are generally a highly social family. Most species associate in flocks of varying sizes throughout the year. A flock of starlings is called a murmuration. These flocks may include other species of starlings and sometimes species from other families. This sociality is particularly evident in the their roosting behaviour; in the non-breeding season some roosts can number in the thousands of birds.
Fonte: Wikipedia
Caso não tenha entendido, jogue no google tradutor. #preguiça