Keywords
biology, bird, chemistry, chicken, coloration, colour, colouration, duck, egg, egg box, egg carton, eggs, eggshell, food, free range, hen, markings, mixed, pigment, pigmentation, poultry, protein, reproduction, shell, shell pigment, unfertilised, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u72509124