An adult female mallard duck is floating in calm, murky water

An adult female mallard duck is floating in calm, murky water. The duck is facing slightly to the right of the camera and its head is tilted downwards. The duck's plumage is predominantly brown with intricate patterns of lighter brown and black. Sunlight is reflecting off the duck's feathers and its beak, which is a dull orange color. The water is a deep blue-grey and has patches of floating debris and aquatic vegetation. Several thin, brown reeds or grass stalks are visible protruding from the water around the duck. The reflection of the duck is visible in the water below it. The background is a blurred expanse of water with more floating debris, indicating an outdoor, natural setting. The scene is lit by natural light, likely from a low sun angle, casting a warm glow on the duck.