Common kingfisher closeup. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339426/free-photo-image-bird-creative-animal-zooFree Image from public domain licenseHummingbird feeding on a flower. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284073/free-photo-image-flower-bird-hummingbirdFree Image from public domain licenseRed Siskin (2016). Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3060401/free-photo-image-bird-animal-zooFree Image from public domain licenseHunei District, Hunei, Taiwan. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282431/free-photo-image-bird-animal-natureFree Image from public domain licenseBald eagle on a winter day at Ottawa National Wildlife Refuge. Original public domain image from Flickr https://www.rawpixel.com/image/4025472/photo-image-tree-botanical-birdFree Image from public domain licenseSpangled cotinga blue bird image, free public domain CC0 photo. https://www.rawpixel.com/image/5925722/photo-image-public-domain-leaf-plantView licenseCrested CaraCara bird in Arizona https://www.rawpixel.com/image/426979/bird-spreading-wingsView licenseBlue hummingbird flies through the green forest. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284250/free-photo-image-bird-public-domain-flyingFree Image from public domain licenseCommon kingfisher in Japan. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339414/free-photo-image-kingfisher-animal-natureFree Image from public domain licenseColorful blue and yellow macaw parrot at West Palm Beach. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282813/free-photo-image-parrot-macaw-public-domainFree Image from public domain licenseMacro of a parrot with vibrant blue, yellow and green colors cocking its head to the side. Original public domain image from… https://www.rawpixel.com/image/3282449/free-photo-image-birds-parrot-animalFree Image from public domain licenseSparrow on the bush. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305381/free-photo-image-animal-animals-images-pictures-beakFree Image from public domain licenseBlue and orange kingfisher. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282427/free-photo-image-kingfisher-food-beeFree Image from public domain licenseCloseup of a wild hawk background https://www.rawpixel.com/image/1227085/wild-hawk-closeView licenseA great blue heron wades through brackish water. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/441025/free-photo-image-blue-heron-bird-nasaFree Image from public domain licenseTiny Hummingbird hovering mid air https://www.rawpixel.com/image/426967/hummingbird-flyingView licenseAmerican robin in a woods background. Original public domain image from Flickr https://www.rawpixel.com/image/4021566/american-robin-woods-backgroundFree Image from public domain licenseAmerican flamingo (Phoenicopterus ruber) in São Paulo Zoo. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339306/free-photo-image-animal-zoo-public-domainFree Image from public domain licenseFemale Mallard Flying in Arkansas. Original public domain image from Flickr https://www.rawpixel.com/image/3325768/free-photo-image-bird-animal-anseriformesFree Image from public domain licenseBarn owl in the field of flowers. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3283035/free-photo-image-bird-barn-owl-eyeFree Image from public domain licenseFree swan floating on water in dark background image, public domain animal CC0 photo. https://www.rawpixel.com/image/5920549/photo-image-background-public-domain-natureFree Image from public domain licenseTerns flying over the Cannon Beach in Oregon, USA https://www.rawpixel.com/image/438808/cannon-beach-oregonView licenseFree bee eater bird in nature background portrait photo, public domain animal CC0 image. https://www.rawpixel.com/image/5923391/photo-image-background-public-domain-natureFree Image from public domain licenseParrot poses on a tree in Florida. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/421919/free-photo-image-parrot-macaw-birdView licenseGreat horned owl in Fort Yellowstone, USA. Original public domain image from Flickr https://www.rawpixel.com/image/4032653/photo-image-background-tree-birdFree Image from public domain licenseBirds flying in a golden sky. Early one morning, as the day was dawning. Original public domain image from Flickr https://www.rawpixel.com/image/4021601/photo-image-background-bird-natureFree Image from public domain licensePeacock portrait. The term "peacock" is commonly used to refer to birds of both sexes. Technically, only males are peacocks.… https://www.rawpixel.com/image/4021339/photo-image-blue-pattern-greenFree Image from public domain licenseGreen wild parrot perched atop a mountain rock in Titiroa. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286787/free-photo-image-nature-animal-birdFree Image from public domain licenseCardinal bird perch on berry branch. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286676/free-photo-image-cardinal-birds-animalFree Image from public domain licenseGoofy Puffin. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282414/free-photo-image-bird-creative-commons-public-domainFree Image from public domain licenseFlock of seagull flying over Isle of Jersey, Channel Islands https://www.rawpixel.com/image/2042561/birds-the-skyView licenseCloseup of a puffin with fish in its beak https://www.rawpixel.com/image/1227118/cute-puffin-birdView licenseBrown Kiwi (2010) by Smithsonian Institution. Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3061718/free-photo-image-kiwi-animal-birdFree Image from public domain licenseNew Bedford, Massachusetts (1860-1870) by William Allen Wall https://www.rawpixel.com/image/10045120/new-bedford-massachusetts-1860-1870-william-allen-wallFree Image from public domain licenseOstrich Chase, Buenos Aires - Auca (1854/1869) by George Catlin https://www.rawpixel.com/image/10043812/ostrich-chase-buenos-aires-auca-18541869-george-catlinFree Image from public domain licensePinnated Grous, Blue-green Warbler, and Nashville Warbler (published 1808-1814) by Alexander Lawson and Alexander Wilson https://www.rawpixel.com/image/10032260/image-animal-plant-birdFree Image from public domain licenseModo de volar (A Way of Flying) (published 1864) by Francisco Goya https://www.rawpixel.com/image/10046402/modo-volar-way-flying-published-1864-francisco-goyaFree Image from public domain licenseThe Departure for the Hunt (c. 1665/1668) by Philips Wouwerman https://www.rawpixel.com/image/10014225/the-departure-for-the-hunt-c-16651668-philips-wouwermanFree Image from public domain licenseThe Moselle Bridge at Coblenz (1817) by Joseph Mallord William Turner https://www.rawpixel.com/image/9791471/the-moselle-bridge-coblenz-1817-joseph-mallord-william-turnerFree Image from public domain licenseKeokuk, Chief of the Sacs and Foxes (1838) by Alfred Hoffy, Charles Bird King, John T Bowen and Frederick W Greenough https://www.rawpixel.com/image/10041206/image-foxes-face-personFree Image from public domain licenseBenjamin and Eleanor Ridgely Laming (1788) by Charles Willson Peale https://www.rawpixel.com/image/10025979/benjamin-and-eleanor-ridgely-laming-1788-charles-willson-pealeFree Image from public domain licenseAlong the Jordan River (recto) (1849/1850) by August Löffler https://www.rawpixel.com/image/10034280/along-the-jordan-river-recto-18491850-august-lofflerFree Image from public domain licenseClose up of a green parrot https://www.rawpixel.com/image/437362/green-macawView licenseCloseup of a puffin with fish in its beak https://www.rawpixel.com/image/1205997/puffin-bird-with-fishView licenseAwa Province: Naruto Whirlpools (1855) by Utagawa Hiroshige https://www.rawpixel.com/image/9790070/awa-province-naruto-whirlpools-1855-utagawa-hiroshigeFree Image from public domain licensePlate 4: From Portfolio "Folk Art of Rural Pennsylvania" (c. 1939) by American 20th Century https://www.rawpixel.com/image/10084312/image-animal-plant-birdFree Image from public domain licensePlate 12: From the Portfolio "Folk Art of Rural Pennsylvania" (c. 1939) by American 20th Century https://www.rawpixel.com/image/10084274/image-potted-plant-animalFree Image from public domain licenseThe Mermaid (1881) by Frederick Stuart Church and American Art Review https://www.rawpixel.com/image/10049036/the-mermaid-1881-frederick-stuart-church-and-american-art-reviewFree Image from public domain licenseThe Flamingo (Phoenicopterus ruber) (published 1731-1743) by Mark Catesby https://www.rawpixel.com/image/10017619/the-flamingo-phoenicopterus-ruber-published-1731-1743-mark-catesbyFree Image from public domain licenseMadonna and Child in a Rosary (c. 1480) by German 15th Century https://www.rawpixel.com/image/10000119/madonna-and-child-rosary-c-1480-german-15th-centuryFree Image from public domain licenseThe Purple Jack Daw (Gracula Quiscula) (published 1731-1743) by Mark Catesby https://www.rawpixel.com/image/10017549/the-purple-jack-daw-gracula-quiscula-published-1731-1743-mark-catesbyFree Image from public domain licenseThe Farm-Yard in Winter (1861) by George Henry Durrie, Currier and Ives and Currier and Ives https://www.rawpixel.com/image/10045897/image-cow-animals-birdFree Image from public domain licenseThe Blue Heron (Ardea coerulea) (published 1731-1743) by Mark Catesby https://www.rawpixel.com/image/10017766/the-blue-heron-ardea-coerulea-published-1731-1743-mark-catesbyFree Image from public domain licenseSun Breaking through Clouds above the Roman Campagna (1844 or after) by Johann Jakob Frey https://www.rawpixel.com/image/10042057/image-clouds-sunset-sceneryFree Image from public domain licenseReturn of the Fishing Boats, Étretat (1879) by Giovanni Boldini https://www.rawpixel.com/image/9783965/return-the-fishing-boats-etretat-1879-giovanni-boldiniFree Image from public domain license