starlings

A flock of migrating starlings is seen a...A flock of migrating starlings is seen as they perform  their traditional dance fly before land to sleep during the sunset near the southern Israeli village of Tidhar in the northern Israeli Negev desert on February 11, 2014.

Menahem Kahana/AFP

A flock of migrating starlings is seen as they perform their traditional dance fly before land to sleep during the sunset near the southern Israeli village of Tidhar in the northern Israeli Negev desert. 

Starlings in the Scottish Borders

Owen Humphreys/PA Wire

A murmuration of starlings above the small village of Rigg, near Gretna, in the Scottish Borders on Tuesday

A murmuration of starlings fly close to power lines at sunset near Gretna on the Scottish borders.

Owen Humphreys/PA

A murmuration of starlings fly close to power lines at sunset near Gretna, Scotland.