Original public domain image from Flickr https://www.rawpixel.com/image/4026459/original-public-domain-image-from-flickrView licenseCommon YellowthroatPhoto by Nate Rathbun/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028805/photo-image-bird-natureFree Image from public domain licenseFern leaves in a shady forest. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301561/free-photo-image-agaric-animal-cc0Free Image from public domain license