Black swallowtail butterfly caterpillar on fennel (Foeniculum vulgare) host plant https://www.rawpixel.com/image/6077309/photo-image-public-domain-plant-foodFree Image from public domain license白喉冠鹎 Puff-throated bulbul (Alophoixus pallidus), Phu Khiao Wildlife Sanctuary, Thailand. https://www.rawpixel.com/image/6077226/photo-image-public-domain-bird-animalFree Image from public domain licensePink flamingo stretches its neck standing among its flock at the zoo. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3296148/free-photo-image-animal-beak-birdFree Image from public domain licenseStreet art near the old bit of The Royal London Hospital in Whitechapel London. https://www.rawpixel.com/image/6082610/photo-image-public-domain-bird-animalFree Image from public domain license