If birds left tracks in the sky, what would they look like ... so must a pattern form in the wake of a flying bird. But of course birds in flight leave no trace—at least none visible to the ...
The birds spread out and come together. The flock splits apart and fuses together again. Murmurations constantly change direction, flying up a few hundred meters, then zooming down to almost crash ...
If the wind is blowing behind them, the birds fly high up in the sky where the wind will increase their speed. Do birds migrate to Northern Ireland? Birds do migrate to Northern Ireland!
Why do flocks of birds swoop and swirl together in the sky? – Artie W., age 9, Astoria ... Murmurations constantly change direction, flying up a few hundred meters, then zooming down to almost crash ...