David Tipling / Flock of Knot (Calidris canutus) chased by a Peregrine as they arrive to roost at high tide, Cormorants in foreground, Snettisham RSPB Reserve, The Wash, Norfolk, September.

Nick Upton / Marsh harrier (Circus aeruginosus) female hunting among a panicked flock of Common teal (Anas crecca) in flight over marshland, RSPB Greylake Nature Reserve, Somerset, UK, December.

John Waters / Large murmuration of Common starlings (Sturnus vulgaris) swirling over reedbed roost at sunset, Ham Wall RSPB Reserve, Somerset, England, UK, January.

John Waters / Large flock of Common starlings (Sturnus vulgaris) swirling over reedbed roost at dusk, Ham Wall RSPB Reserve, Somerset, England, UK, November.

John Waters / Large flock of Common starlings (Sturnus vulgaris) swirling over reedbed roost at dusk, Ham Wall RSPB Reserve, Somerset, England, UK, November.

Chris Gomersall / Large flock of Red knot (Calidris canutus) moving at high tide roost, in winter plumage, Snettisham RSPB Reserve, Norfolk, England, UK, September.

John Waters / Close-up of a Coot (Fulica atra) walking on ice, Greylake RSPB Reserve, Somerset Levels, England, UK, February.

John Waters / Male Shoveler (Anas clypeata) chasing other males away from his mate, Greyale RSPB Reserve, Somerset Levels, England, UK, February.

John Waters / Slow motion clip of a mixed flock of Teal (Anas crecca) and Wigeon (Anas penelope) landing in a lake, Greylake RSPB Reserve, Somerset Levels, England, UK, February.

John Waters / Wide-angle shot of wetland landscape at sunset, with Lapwings (Vanellus vanellus) flying to roost, Ham Wall RSPB Reserve, Somerset Levels, England, UK, February.

John Waters / Snipe (Gallinago gallinago) feeding, catches worm and washes it in water, Greylake RSPB Reserve, Somerset Levels, England, UK, February.

Philippe Clement / Common guillemots (Uria aalge) and Razorbills (Alca torda) swimming and fishing at sea, Fowlsheugh RSPB Reserve, Aberdeenshire, Scotland, UK, May.

Philippe Clement / Razorbill (Alca torda) looking around on sea cliff top at seabird colony in spring, Fowlsheugh RSPB Reserve, Aberdeenshire, Scotland, UK, May

John Waters / Mixed flock of Wigeon (Anas penelope) and Northern lapwings (Vanellus vanellus) disturbed by hunting Marsh Harrier (Circus aeruginosus), Greylake RSPB Reserve, Somerset Levels, England, UK, December.

Ernie Janes / Black headed gull (Larus ridibundus) in winter plumage, Titchwell RSPB reserve, Norfolk, England, UK, December.

Robin Chittenden / Highland cow (Bos taurus) feeding in long grass, Strumpshaw Fen RSPB, Norfolk, UK, May.

Ernie Janes,Ernie Janes / RSPB Nature reserve at Titchwell Marsh Norfolk, May

Will Bolton / 2020VISION / Truck dumping rubbish at landfill site with mixed flock of Gulls (Larus sp.) flying overhead, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Machinery working on a landfill site with mixed flock of Gulls (Larus sp.) flying overhead, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Mixed flock of Gulls (Larus sp.) flying over and scavenging on a pile of rubbish on a landfill site, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Truck dumping rubbish at landfill site with mixed flock of Gulls (Larus sp.) scavenging on rubbish, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Truck dumping rubbish at landfill site with mixed flock of Gulls (Larus sp.) flying overhead, Pitsea, Essex, England, UK, November 2011.

Will Bolton / 2020VISION / Panning shot across a landfill site with working machinery and mixed flock of Gulls (Larus sp.) and Common starlings (Sturnus vulgaris) flying overhead, Pitsea, Essex, England, UK, November 2011.

Mark Hamblin / 2020VISION / RSPB volunteers using ropes to pull down pine tree as part of woodland management plan to improve habitat for wildlife, Abernethy Forest RSPB Reserve, Cairngorms National Park, Scotland, UK, September...

Peter Cairns / 2020VISION / Waterfall, Fairy Glen RSPB reserve, Inverness-shire, Scotland, UK, May.

Peter Cairns / 2020VISION / View of a waterfall with a fallen tree in the foreground, Fairy Glen RSPB reserve, Inverness-shire, Scotland, UK, July.

Fergus Gill / 2020VISION / Skylark (Alauda arvensis) perched on a fence post, vocalising, Balranald RSPB reserve, North Uist, Outer Hebrides, Scotland, UK, June. Did you know? The collective noun for a group of Skylarks is an e...

Fergus Gill / 2020VISION / Redshank (Tringa totanus) perched on a fence post, vocalising, Balranald RSPB reserve, North Uist, Outer Hebrides, Scotland, UK, June 2012.

Fergus Gill / 2020VISION / Redshank (Tringa totanus) perched on a fencepost, vocalising, Balranald RSPB reserve, North Uist, Outer Hebrides, Scotland, UK, June 2012.

Fergus Gill / 2020VISION / Redshank (Tringa totanus) vocalising, Balranald RSPB reserve, North Uist, Outer Hebrides, Scotland, UK, June 2012.

Terry Whittaker / 2020VISION / Corn buntings (Emberiza calandra) feeding on bird conservation crop, Wallasea Wild Coast Project, RSPB Greater Thames Futurescapes Project, Essex, England, UK, December.

Mark Hamblin / 2020VISION / RSPB staff and volunteers tree pulling pine trees down in plantation to create open habitat in woodland, RSPB Abernethy Forest Reserve, Cairngorms National Park, Scotland, UK, September 2011. Model re...

Mark Hamblin / 2020VISION / RSPB staff felling pine trees in plantation to create open habitat in woodland, RSPB Abernethy Forest Reserve, Cairngorms National Park, Scotland, UK September 2011, model released

Mark Hamblin / 2020VISION / RSPB staff warden hand sawing pine tree to create open habitat in woodland, RSPB Abernethy Forest Reserve, Cairngorms National Park, Scotland, UK, September 2011. Model released.

Andy Rouse / 2020VISION / Gannet (Morus bassanus) portrait showing blue eyes. Bempton Cliffs RSPB reserve, UK, Yorkshire, July.

Terry Whittaker / 2020VISION / Corn buntings (Emberiza calandra) in flight, Wallasea Wild Coast Project, RSPB Greater Thames Futurescapes Project, Essex, England, UK, December.

Paul Harris / 2020VISION / Young volunteer clearing scrub, RSPB Vange Marshes reserve, Basildon, Essex, England, UK, November 2011.

Paul Harris / 2020VISION / Young volunteers clearing scrub, RSPB Vange Marshes reserve, Basildon, Essex, England, UK, November 2011.

Paul Harris / 2020VISION / Young volunteers clearing scrub, RSPB Vange Marshes reserve, Basildon, Essex, England, UK, November 2011.

Paul Harris / 2020VISION / Volunteers clearing and burning vegetation, Vange Marsh RSPB reserve, Essex, England, UK, November.

Mark Hamblin / 2020VISION / Goldfinches (Carduelis carduelis) squabbling over teasel seeds in winter. Hope Farm RSPB reserve, Cambridgeshire, England, UK, February. Crop of 01390677

Chris Gomersall / 2020VISION / Flock of Dunlin (Calidris alpina) in flight at sunset over the Wash estuary, Snettisham RSPB reserve, Norfolk, England, UK, March. Did you know? While migrating, dunlins travel in massive groups of up...

Chris Gomersall / 2020VISION / Flock of Red knot (Calidris canutus) and Bar-tailed godwit (Limosa lapponica) in flight at high water on the Wash estuary, Snettisham RSPB reserve, Norfolk, England, UK, March

Chris Gomersall / 2020VISION / Flock of Red knot (Calidris canutus) in flight at high water on the Wash estuary, Snettisham RSPB reserve, Norfolk, England, UK, March

Chris Gomersall / 2020VISION / Red campion (Silene dioica) flowering in conservation margin next to crop of Oilseed rape at RSPB's Hope Farm, Cambridgeshire, UK, April 2011.

Chris Gomersall / 2020VISION / Brown hare (Lepus europaeus) by oilseed rape crop at RSPB's Hope Farm in Cambridgeshire. April 2011.

Chris Gomersall / 2020VISION / Worker honey bee (Apis mellifera) feeding on nectar of Borage (Borago officinalis) flower in conservation margin at RSPB's Hope Farm, Cambridgeshire, UK. May

Chris Gomersall / 2020VISION / Herb rich conservation margin around farmland with Ox-eye daisies (Leucanthemum vulgare) at RSPB's Hope Farm, Cambridgeshire, UK, May 2011