Magdalena Island, Magallanes Region, Punta Arenas, Chile, South America

Atlantic Puffin (Fratercula arctica) in its burrow on Skomer Island in July, a nature reserve off the coast of Pembrokeshire, Wales, United Kingdom, Europe

Chinstrap penguin (Pygoscelis antarctica) buried in snow at breeding colony in a snowstorm on Half Moon Island near Livingston Island in the South Shetland Islands, Antarctica

A Manx shearwater emerging from its burrow at night on the mountains of the Isle of Rhum, Scotland, United Kingdom, Europe

European Kestrel, Common Krestel, (Falco tinnunculus), adult in breeding burrow, Pelm, Kasselburg, Eifel, Germany, Europe

Common starling (Sturnus vulgaris) feeding young bird at breeding cavity, North Rhine-Westphalia, Germany, Europe

Great spotted woodpecker (Dendrocopos major), male with tongue outstretched at the entrance hole of the breeding cavity, Bad Homburg, Hesse, Germany

Southern Yellow-billed Hornbill (Tockus leucomelas), Red-ringed Hornbill, adult, male, at breeding den, alert, Kruger, Kruger National Park, South Africa

Starling (Sturnus vulgaris), also known as the Common starling, with food for the young birds, insects, grasshoppers and grasshoppers as food for the young, foraging, breeding, breeding cavity, tree cavity, nesting site, Middle Elbe River Landscape, Middle Elbe Biosphere Reserve, Saxony-Anhalt, Germany, Europe

Hoopoe (Upupa epops) Bird of the Year 2022, male with food for his female, bridal gift, pair formation, courtship, begging for food, foraging, erected bonnet, pair, breeding cavity, sunrise, interaction, flying, climate change, Middle Elbe Biosphere Reserve, Saxony-Anhalt, Germany, Europe

Young little owls (Athene noctua) at the breeding tube, Emsland, Lower Saxony, Germany, Europe

Hyacinth Macaw (Anodorhynchus hyacinthinus), at nesting den, Pantanal, Brazil, South America

Hoopoe (Upupa epops) with Blue-winged grasshopper (Oedipoda caerulescens) as food, young birds feeding at brood cave, Biosphere Reserve Mittelelbe, Saxony-Anhalt, Germany, Europe

Hoopoe (Upupa epops) approaching Breeding Cave, National Park Kiskunsag, Hungary, Europe

Hoopoe (Upupa epops) with food at brood-cave, backlight, biosphere reserve Mittelelbe, Saxony-Anhalt, Germany, Europe

Middle spotted woodpecker (Dendrocopos medius), with food in its beak at the breeding cavity, North Rhine-Westphalia, Germany, Europe

Hoopoe (Upupa epops), adult bird feeds young birds at the breeding cave in the tree, worm in the beak, Saxony-Anhalt, Germany, Europe

African penguin (Spheniscus demersus), adult, looks from breeding cave, beach, on land, Boulders Beach, Simon's Town, Western Cape, South Africa, Africa

Hoopoe (Upupa epops) feeding young bird, Middle Elbe Biosphere Reserve, Saxony-Anhalt, Germany, Europe

Southern carmine bee-eater (Merops nubicoides), Crimson pint looking out of breeding cave, Zambia, Africa

Blue tit (Cyanistes caeruleus) looking out of the entrance hole of the breeding cavity, Moenchbruch nature reserve, Moerfelden, Hesse, Germany, Europe

Middle spotted woodpecker (Dendrocopos medius) at nest hole, feeding young bird, Lower Saxony, Germany, Europe

European green woodpecker (Picus viridis) leaves breeding cavity, Neunkirchen im Siegerland, North Rhine-Westphalia, Germany, Europe

Tawny owl (Strix aluco), adult bird looking out of a tree cavity, Frankfurt, Hesse, Germany, Europe

Common starling (Sturnus vulgaris) feeding young bird at breeding cavity, North Rhine-Westphalia, Germany, Europe

Common starling (Sturnus vulgaris) flies to breeding cavity, North Rhine-Westphalia, Germany, Europe

Beehive, artificial nesting box for honey bees, Baden-Wuerttemberg, Germany, Europe

Insect hotel, bee hotel, Waiblingen, Baden-Wuerttemberg, Germany, Europe

Raccoon (Procyon lotor), fawn looking out of its tree hollow, Hesse, Germany, Europe

Common starling (Sturnus vulgaris), adult bird approaching breeding cavity with food in its beak, Hesse, Germany, Europe

Common starling (Sturnus vulgaris), old bird feeding young bird at the breeding cavity, Hesse, Germany, Europe

European green woodpecker (Picus viridis), male at nest hole feeding the young, Biosphere Reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

Puffin (Fratercula arctica), breeding den, Hornoya, Varanger, Norway, Europe

Middle spotted woodpecker (Dendrocopos medius), looking out of breeding cavity, North Rhine-Westphalia, Germany, Europe

Hoopoe (Upupa epops) with feed at brood cave, Kiskunsag National Park, Hungary, Europe

Raccoon (Procyon lotor), young and fawn looking out of their tree den, Hesse, Germany, Europe

Colourfully painted bird house at the Rosenheim 2010 State Garden Show, Rosenheim, Bavaria, Germany, Europe

Tawny owl (Strix aluco) in front of its burrow, Hesse, Germany, Europe

Young hawk owl (Strix uralensis), looking out of the breeding hole, Bavarian Forest, Germany, Europe

Tawny owl (Strix aluco) in front of its burrow, Hesse, Germany, Europe

Young hawk owl (Strix uralensis), looking out of the breeding hole, Bavarian Forest, Germany, Europe

Middle spotted woodpecker (Dendrocopos medius) looking out of nest hole, Lower Saxony, Germany, Europe

European green woodpecker (Picus viridis), male at nest hole feeding the young, Biosphere Reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe