On winter evenings in the UK, flocks of five thousand to fifty thousand starlings swirl in the sky. These are called murmurations.

Birds of Europe · day 1 of 7
These winter flocks are commonly called murmurations.
Each starling changes course by watching its closest neighbours.
A wild starling was seen copying a sound it had heard only once.
Mozart's pet starling sang a passage from one of his own piano concertos.
He adds flowers and fresh greens, and herbs seem to attract females.
Two minutes a day, a new wild animal. Free on iPhone, Android and the web.
Feravox is a free wildlife app: 4,400+ species with real recorded sounds, 11 nature games and a free Daily 5, 1v1 quiz duels, conservation wins, and a safe Kids mode.