White swan flapping its wings. Free public domain CC0 photo. https://www.rawpixel.com/image/6031221/photo-image-public-domain-nature-black-backgroundFree Image from public domain licenseMallard duck png sticker, transparent background https://www.rawpixel.com/image/7704572/mallard-duck-png-sticker-transparent-backgroundView licenseCygnet swan png, transparent background https://www.rawpixel.com/image/9339125/cygnet-swan-png-transparent-backgroundView licenseMallard duck, isolated animal image psd https://www.rawpixel.com/image/7704570/mallard-duck-isolated-animal-image-psdView licenseClass II, Order VI, Natatores. Family Anatidae. Hooded Sheldrake... by Eugene S M Haines https://www.rawpixel.com/image/14257472/photo-image-plant-person-artFree Image from public domain licenseClass II, Order VI, Natatores. Family Anatidae. The White Fronted Goose... by Eugene S M Haines https://www.rawpixel.com/image/14257358/photo-image-frame-plant-artFree Image from public domain license