Remi Masson / Pike (Esox lucius) hunting in a shoal of Perch (Perca fluviatilis), Lake Neuchatel, Switzerland. June.

Markus Varesvuo / Cormorant (Phalacrocorax carbo) swallowing perch prey, Hungary, January

Andy Rouse / Kingfisher (Alcedo atthis) on perch, UK, January.

Tony Wu / Twinspot snapper (Lutjanus bohar) shoal rushing up to spawn, releasing a cloud of milky white sperm and eggs in the water column. Caroline Islands, Palau, November.

Alex Mustard / Colourful reef scene with Leather corals (Sarcophyton sp.), Soft corals (Dendronephthya sp.) Seafans (Melithea sp.) and fish, including Magenta slender anthias (Luzonichthys waitei) and Scalefin anthi...

Tony Wu / Twinspot snapper (Lutjanus bohar) engaged in a mass spawning aggregation early in the morning. Caroline Islands, Palau. April. Winner of Underwater category, Wildlife Photographer of the Year 2016.

Alex Mustard / Portrait of pair of Bohar snappers (Lutjanus bohar) in their spawning aggregation. Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Alex Mustard / Portrait of Bohar snappers (Lutjanus bohar) in its spawning aggregation. Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Ben Hall / Cormorant (Phalacrocorax carbo) with perch in its beak, Cheshire, UK, October. Highly Commended in the British Wildlife Photography Awards (BWPA) competition 2013.

Tim Laman / King of Saxony Bird of Paradise (Pteridophora alberti) adult male on calling perch above the rainforest canopy. Tari Pass area, Southern Highlands Province, Papua New Guinea.

Tim Laman / King of Saxony Bird of Paradise (Pteridophora alberti) adult male on calling perch, Southern Highlands province, Papua New Guinea

Bence Mate / Hoopoe (Upupa epops) landing on perch, Pusztaszer, Kiskunsagi National Park, Hungary

Peter Cairns / 2020VISION / Osprey (Pandion haliaetus) with fish prey on feeding perch, Cairngorms National Park, Scotland, UK, July.

Michel Roggo / Perch (Perca fluviatilis). Juktan river, tributary of Umeälven river, Lapland, Sweden, July.

Rob Jordan / 2020VISION / Merlin (Falco columbarius) female on perch with Meadow Pipit chick prey for its offspring. Sutherland, Scotland, UK, June. 2020VISION Book Plate.

Rob Jordan / 2020VISION / Merlin (Falco columbarius) female on perch with Meadow Pipit chick prey for its offspring. Sutherland, Scotland, June.

Rob Jordan / 2020VISION / Merlin (Falco columbarius) female on perch with Meadow Pipit chick prey for its offspring. Sutherland, Scotland, June.

Rob Jordan / 2020VISION / Merlin (Falco columbarius) female on perch with Meadow Pipit chick prey, legs just visible, for its offspring. Sutherland, Scotland, June.

Juan Carlos Munoz / Fossil of extinct perch fish (Priscacara sp) from the Eocene period, Wyoming, USA

Fergus Gill / 2020VISION / Tree Sparrow (Passer montanus) Perching on a snow covered branch. Perthshire, Scotland.

Andy Rouse / 2020VISION / Wood Warbler (Phylloscopus sibilatrix) singing from perch. Wales., April.

Andy Rouse / Osprey (Pandion haliaetus) newly fledged young on perch. Dyfi Estuary, Wales, August. It is the first time ospreys have bred at this location for 400 years.

Tim Laman / Berlepschi's Parotia Bird of Paradise (Parotia berlepschi) male on the perch at his display court. Foja Mountains, Papua, Indonesia, 2008. (taken during Conservation International Rapid Assessment Pro...

Paul Hobson / Long-eared owl (Asio otus) on tree stump, sillhouette in moonlight, captive, Yorkshire, UK

Wild Wonders of Europe / Roggo / Male Pikeperch / Zander (Stizostedion / Sander lucioperca) defending nest, calm part of the Rhine, Schaffhausen, Switzerland, May 2009

Wild Wonders of Europe / Roggo / Male Zander / Pikeperch (Stizostedion / Sander lucioperca) defending nest, with Chub (Leuciscus cephalus) in the distance, calm part of the Rhine, Schaffhausen, Switzerland, May 2009

Andy Rouse / Common kingfisher (Alcedo atthis) on perch watching fish, UK

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male calling on calling perch near his display court, Huon Peninsula, YUS Conservation Area, Morobe Province, Papua New Guinea. Near-threatened

Tim Laman / King of Saxony (Pteridophora alberti) bird of paradise, male on display perch performing a practice display, Southwestern slopes of Mt. Hage, Enga Province, Papua New Guinea.

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male perched with fruit on calling perch near his display court, Huon Peninsula, YUS Conservation Area, Morobe Province, Papua New Guinea. Near-thr...

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male erecting his cape in display on calling perch near his display court, Huon Peninsula, YUS Conservation Area, Morobe Province, Papua New Guinea...

Tim Laman / King of Saxony Bird of Paradise (Pteridophora alberti) male displaying on display perch, Enga Province, Papua New Guinea.

Tim Laman / Male Victoria's Riflebird (Ptiloris victoriae) bird of paradise perched, calling on display perch. Atherton Tablelands, Wooroonooran National Park, Queensland, Australia.

Fred Bavendam / Butterfly Perch (Caesioperca lepidoptera) group swimming around two sponges, Tasmania, Australia

Colin Varndell / Willow warbler {Phylloscopus trochilus} portrait. UK.

TOM MANGELSEN / American bald eagles on perch (Haliaeetus leucocephalus) Alask

Tom Vezo / Baltimore Oriole (Icterus galbula) female on perch, Long Island, New York

Michio Hoshino / Bald Eagle (Haliaeetus leucocephalus) calling from perch, Alaska

Fred Bavendam / Butterfly Perch (Caesioperca lepidoptera) swimming amidst Gorgonian Sea Whips, fans and various kinds of sponges at 40 meters depth, Tasman Peninsula, Tasmania, Australia

Fred Bavendam / Butterfly Perch (Caesioperca lepidoptera) and diver swimming amidst Gorgonian Sea Whips, Fans and various kinds of Sponges at 40 meters depth, Tasman Peninsula, Tasmania, Australia

Hans Christoph Kappel / Hoopoe on perch displaying crest, Neusiedl Austria Europe

WILLIAM OSBORN / Blue tit on lichen covered perch, UK

Mike Wilkes / Portrait, Yellowhammer on perch. UK

Paul Hobson / Female pied flycatcher on perch, England, UK

WILLIAM OSBORN / Blue tit on lichen covered perch (Parus caeruleus) UK

Alex Mustard / Scalefin anthias (Pseudanthias squamipinnis) male with a long exposure. Ras Katy, Sharm El Shiekh, Sinai, Egypt. Red Sea. Commended in the GDT Photography competition 2019.

Ann & Steve Toon / Greenbacked heron (Butorides striatus) peering from perch, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Redbilled oxpecker (Buphagus erythrorhynchus) drinking from perch on warthog, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Alex Mustard / Colourful coral reef scene with Scalefin anthias (Pseudanthias squamipinnis), soft corals (Dendronepthya sp.) and hard corals (Acropora sp.). Ras Mohammed National Park, Sinai, Egypt. Red Sea

Alex Mustard / Colourful coral reef wall, with orange Scalefin anthias (Pseudanthias squamipinnis) swarming over red soft corals (Dendronephthya sp.) in a current. Ras Mohammed National Park, Sinai, Egypt. Red Sea

Alex Mustard / Large school of Humpback snapper (Lutjanus gibbus) form into a tight ball on a coral reef. North Ari Atoll, Maldives. Indian Ocean.

Georgette Douwma / Kaleidoscopic image of soft corals (Dendronephthya sp) and Lyretail anthias (Pseudanthias squamipinnis), Egypt, Red Sea.

Georgette Douwma / Kaleidoscopic image of Bigeye snappers (Lutjanus lutjanus) with soft corals. West Papua, Indonesia.

Georgette Douwma / Kaleidoscopic image of Latticed sandperdh, Spothead grubfish or False-eye grubfish (Parapercis clathrata), male. Puerto Valera, Philippines.

David Hall / Sandperch (Parapercis sp) with two Isopod (Cymothoidae) ectoparasites on body. Pantar, Alor Archipelago, Indonesia.

Gary Bell/ Oceanwide / Red-cheeked Anthias (Pseudanthias huchtii) school in reef, Great Barrier Reef, Australia

George Sanker / Green heron (Butorides virescens) fishing from branch perch above water. Everglades National Park, Florida, USA. March.

Sven Zacek / Ural owl (Strix uralensis) using an abandoned house as en elevated perch for hunting, Tartumaa county, Southern Estonia. March.

Pascal Kobeh / Zander / Pike-perch (Sander lucioperca) on the bottom of the river, Cher River, Loir-et-Cher Department, France

Alex Mustard / Coral grouper (Cephalopholis miniata) waits in ambush, hiding against a seafan (Annella sp.) hunting silversides (Atherinidae), with schooling bigeye snapper (Lutjanus lutjanus) behind. Misool, Raja A...

Alex Mustard / Several mimic goatfish (Mulliodichthys mimicus) hide within a school of Bluestripe snapper (Lutjanus kasmira) on a coral reef. North Ari Atoll, Maldives. Indian Ocean

John Chan / White-tailed kite (Elanus leucurus) landing on a perch, Southern California, USA.

John Chan / White-tailed kite (Elanus leucurus) landing on a perch and scratching, Southern California, USA.

Andy Rouse / Kingfisher, (Alcedo atthis), on perch in rain, UK

Andy Rouse / Kingfisher, (Alcedo atthis), on perch, UK

Andy Rouse / Male Stonechat, (Saxicola rubicola), on perch, UK

Andy Rouse / Kingfisher, (Alcedo atthis), on perch, UK

Andy Rouse / Kingfisher, (Alcedo atthis), on perch, UK

Andy Rouse / Kingfisher, (Alcedo atthis), on perch, UK

Georgette Douwma / Blackfin sandperch (Parapercis snyderi). Lembeh Strait, North Sulawesi, Indonesia.

Marie Read / Royal tern (Sterna maxima) perching on a sand castle on a beach, Fort De Soto Park, St. Petersburg, Florida, USA, March.

Marie Read / Roseate spoonbill (Ajaia ajaja), adult in breeding plumage flying in to land on a perch, Orlando, Florida, USA, March.

Marie Read / Short-eared Owl (Asio flammeus) shaking after preening while perched on fencepost, Boxelder County, Utah, USA, May.

Marie Read / Snowy Owl (Nyctea scandiaca) female preparing to take flight from its perch on a fence, Barrie, Ontario, Canada. February.

Marie Read / Black terns (Chlidonias niger), pair on a perch, vocalizing during courtship (termed 'Erect Posture' display), Montezuma National Wildlife Refuge, New York, USA, May.

Marie Read / Crested caracaras (Caracara cheriway), midair aggressive interaction between two for access to perch, Martin Refuge, Rio Grande Valley, Texas, USA, March.

Marie Read / Eastern screech-owl (Megascops asio) grey morph, roosting in tree cavity in winter, Lansing, New York, USA, January.

Marie Read / American robin (Turdus migratorius) male on snow-covered ground, Ithaca, New York, USA, April.

Georgette Douwma / Blackbarred sandperch (Parapercis tetracantha). West Papua, Indonesia. Indo-West Pacific.

John Chan / Female Anna's hummingbird (Calypte anna) flying back and forth from its perch, hunting gnats swarming nearby, Southern California, USA, January.

John Chan / Male Anna's hummingbird (Calypte anna) flying back and forth from its perch, hunting gnats swarming nearby, Southern California, USA, January.

John Chan / Male Allen's hummingbird (Selasphorus sasin) taking off from perch, Southern California, USA, March.

John Chan / Male Allen's hummingbird (Selasphorus sasin) taking off from perch, Southern California, USA, March.

John Chan / Male Allen's hummingbird (Selasphorus sasin) surveying territory from perch, Southern California, USA, March.

John Chan / Female Allen's hummingbird (Selasphorus sasin) taking off from perch, Southern California, USA, February.

John Chan / Male Allen's hummingbird (Selasphorus sasin) hunting gnats from perch, Southern California, USA, February.

Nick Hawkins / Blue-lined snapper (Lutjanus kasmira) shoal. Cocos Island National Park, Costa Rica.

Nick Hawkins / Blue-lined snapper (Lutjanus kasmira) shoal. Near Cocos Island National Park, Costa Rica.

David Fleetham / Blackside hawkfish (Paracirrhites forsteri) on Coral perch. Hawaii.

David Fleetham / Blacktail snapper (Lutjanus fulvus) in coral reef. Kauai, Hawaii.

Remi Masson / Shoal of Perch (Perca fluviatilis), Lake Neuchatel, Switzerland. June.

David Fleetham / Bluestripe snapper (Lutjanus kasmira) school under rock arch, introduced species. Kona Coast, The Big Island, Hawaii.

Sandesh Kadur / Pair of Buff-tailed coronet (Boissonneaua flavescens) flying to perch on a branch, with rain falling, Ecuador.

Lynn M. Stone / Blue-fronted Amazon parrot (Amazona aestiva) on perch. Captive.