Threskiornis aethiopicus: African sacred ibis (1778) painting in high resolution by Robert Jacob Gordon. Original from the… https://www.rawpixel.com/image/3089264/free-illustration-image-birds-ibis-creative-commons-bird-african-paintingFree Image from public domain licenseWhite Ibis (Threskiornis strictipennis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321667/free-illustration-image-ibis-australia-birdsFree Image from public domain license