Picryl description: Public domain image of a plant, botany, botanical illustration, botany, free to use, no copyright restrictions.
Public domain photograph of 1920s Israel, free to use, no copyright restrictions image - Picryl description
Birds images: Free photographs of birds all over the World, available for commercial use and free download. Copyright-free, no attribution required.
Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image
Public domain scan of print / book page depicting birds, ornithology, free to use, no copyright restrictions image - Picryl description
Public domain scan of 18th-century botanical illustration, free to use, no copyright restrictions image - Picryl description