Original public domain image from Flickr https://www.rawpixel.com/image/4026446/original-public-domain-image-from-flickrView licenseFull profile photograph of a Great Blue Heron in its natural environment. https://www.rawpixel.com/image/5938509/photo-image-public-domain-bird-animalFree Image from public domain licenseSandhill CranePhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028900/photo-image-plant-bird-natureFree Image from public domain licenseLasioglossum accuminatumAnother fantastic macro capture by our USGS Bee Inventory and Monitoring Lab. This one is called… https://www.rawpixel.com/image/4043759/photo-image-bee-animalFree Image from public domain licenseCupid's Gateway, No. 14 from the series "Imperial Gems" by H.D. Udall https://www.rawpixel.com/image/9012864/cupids-gateway-no-from-the-series-imperial-gems-hd-udallFree Image from public domain licenseSkeleton: illustration of the pelvis, spine and ribcage, seen from behind. Etching, ca. 1871. https://www.rawpixel.com/image/13954054/image-paper-cartoon-artFree Image from public domain licenseSnow geese coming in for a landingPhoto by Mike Budd/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028306/photo-image-bird-nature-2021Free Image from public domain licenseAn ibex standing on the crag of a mountain. Etching by J. E. Ridinger. https://www.rawpixel.com/image/13971685/ibex-standing-the-crag-mountain-etching-ridingerFree Image from public domain licenseDark-eyed JuncoPhoto by Grayson Smith/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028392/photo-image-bird-nature-iceFree Image from public domain licenseAbove, a marine mollusc divulging a fish; below, a marine mollusc divulging a fish. Coloured etching. https://www.rawpixel.com/image/13963600/image-art-sea-animalFree Image from public domain licenseClot of blood in the ovary from a woman who died during menstruation https://www.rawpixel.com/image/13985828/clot-blood-the-ovary-from-woman-who-died-during-menstruationFree Image from public domain license20170927-FS-ASF NF-FG-Bald Eagle_DSC_0009Bald Eagle on the Flaming Gorge NRA on the Ashley National Forest. Forest Service… https://www.rawpixel.com/image/4034599/photo-image-bird-forestFree Image from public domain licenseOriginal public domain image from Flickr https://www.rawpixel.com/image/4026571/original-public-domain-image-from-flickrView licenseHorse and carriage with five persons at Niagara Falls by Henry Hollister https://www.rawpixel.com/image/14276246/horse-and-carriage-with-five-persons-niagara-falls-henry-hollisterFree Image from public domain licenseLe Grisbach pres du Lac de Brienz. Suisse. by William England https://www.rawpixel.com/image/14291175/grisbach-pres-lac-brienz-suisse-william-englandFree Image from public domain license