Thick-billed Green Bittern (Ardetta macrorhyncha) illustrated by Elizabeth Gould (1804–1841) for John Gould’s… https://www.rawpixel.com/image/321760/free-illustration-image-australia-birds-animalsFree Image from public domain licenseLittle Grey Bittern (Ardetta stagnatilis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… https://www.rawpixel.com/image/321646/free-illustration-image-bird-john-gould-animal-birds-australiaFree Image from public domain licenseWhite Tern (Gygis candida) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds of… https://www.rawpixel.com/image/321344/free-illustration-image-birds-australia-gould-illustrationsFree Image from public domain licenseBlack-billed Tern (Sterna melanorhyncha) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321387/free-illustration-image-gould-vintage-centuryFree Image from public domain licenseMinute Bittern (Ardetta pusilla) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds… https://www.rawpixel.com/image/321339/free-illustration-image-vintage-australia-animalsFree Image from public domain licenseSandwich tern (Sterna sandvicensis) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326235/free-illustration-image-von-wright-brothers-century-birdFree Image from public domain licenseYellow-necked Bittern (Ardetta flavicollis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… https://www.rawpixel.com/image/321698/free-illustration-image-vintage-gould-illustrationsFree Image from public domain licenseTorres' Tern (Thalasseus Torresii) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds… https://www.rawpixel.com/image/321386/free-illustration-image-australia-gould-illustrations-birdFree Image from public domain licenseNoddy Tern (Anous Stolidus) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds of… https://www.rawpixel.com/image/321389/free-illustration-image-gould-illustrations-century-australiaFree Image from public domain licenseGraceful Tern (Sterna gracilis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds of… https://www.rawpixel.com/image/321333/free-illustration-image-australia-century-birdsFree Image from public domain licenseCommon tern (STERNA HIRUNDO) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/326237/free-illustration-image-von-wright-brothers-century-birdFree Image from public domain licenseAustralian Bittern (Botaurus Australis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321671/free-illustration-image-century-gould-vintageFree Image from public domain licenseTorres' Straits' Tern (Thalasseus Pelecanoides) illustrated by Elizabeth Gould (1804–1841) for John Gould’s… https://www.rawpixel.com/image/321363/free-illustration-image-australia-century-high-resolution-printsFree Image from public domain licenseBass's Straits' Tern (Thalasseus poliocercus) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… https://www.rawpixel.com/image/321343/free-illustration-image-australia-century-gouldFree Image from public domain licenseGreat-footed Tern (Gelochelidon macrotarsa) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… https://www.rawpixel.com/image/321267/free-illustration-image-bird-gouldFree Image from public domain licensePowerful Tern (Sylochelidon strenuus) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321342/free-illustration-image-vintage-ancient-animalsFree Image from public domain licensePanayan Tern (Onychoprion Panaya) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds… https://www.rawpixel.com/image/321334/free-illustration-image-century-vintage-gouldFree Image from public domain licenseLittle tern (Sterna albifrons) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325778/free-illustration-image-von-wright-brothers-tern-birdFree Image from public domain licenseBlack-naped Tern (Sterna melanauchen) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321357/free-illustration-image-gould-illustrations-centuryFree Image from public domain licenseAustralian Little Tern (Sternula Nereis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321388/free-illustration-image-century-gould-illustrationsFree Image from public domain license277. Cayenne Tern (Sterna cayana) 278. Black Tern (Sterna nigra) illustration from Zoology of New York (1842–1844) by… https://www.rawpixel.com/image/329429/free-illustration-image-birds-vintage-sterna-new-yorkFree Image from public domain license279. Marsh Tern (Sterna anglica) 280. Roseate Tern (Sterna dougalli) illustration from Zoology of New York (1842–1844)… https://www.rawpixel.com/image/329460/free-illustration-image-birds-new-york-bird-zoologyFree Image from public domain license275. Tern (Sterna hirundo) 276. Ditto, young illustration from Zoology of New York (1842–1844) by James Ellsworth De… https://www.rawpixel.com/image/329428/free-illustration-image-birds-new-york-century-zoologyFree Image from public domain license273. Silvery Tern (Sterna argentea) 274. Sandwich Tern (Sterna cantiaca) illustration from Zoology of New York… https://www.rawpixel.com/image/329451/free-illustration-image-animals-bird-birds-new-yorkFree Image from public domain licenseCommon tern (STERNA HIRUNDO) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/326194/premium-illustration-psd-von-wright-brothers-america-ancientView license