Watch spectacular starling murmuration over Norfolk nature reserve
Footage has captured a starling murmuration over the Strumpshaw Fen nature reserve near Norwich.
The reserve has had 20,000 starlings roost with these displays taking place at dusk each night.
Huge flocks begin to form at this time of year, as the birds more to winter roosting sites - often in towns and cities.
They’ve been observed in massive numbers in towns from King’s Lynn to Great Yarmouth, as well as rural areas.
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According to the RSPB: “It’s basically a mass aerial stunt - thousands of birds all swooping and diving in unison. It’s completely breathtaking to witness.
“We think that starlings do it for many reasons. Grouping together offers safety in numbers – predators such as peregrine falcons find it hard to target one bird in the middle of a hypnotising flock of thousands.
“They also gather to keep warm at night and to exchange information, such as good feeding areas.”