Sandwich Tern from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from University of… https://www.rawpixel.com/image/277346/free-illustration-image-audubon-birds-america-public-domainFree 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 licensePng sticker sandwich tern bird hand drawn https://www.rawpixel.com/image/2627904/free-illustration-png-vintage-birds-animal-pngView licenseVector sandwich tern bird hand drawn https://www.rawpixel.com/image/2689842/premium-illustration-vector-animal-artwork-avesView 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 licenseSandwich tern (sterna sandvicensis) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326198/premium-illustration-psd-von-wright-brothers-america-ancientView license