Mallard Duck pair

The mallard is about 20-28 inches in length and has a wingspan of about three feet. It has a blue patch on the top side of its wings with a white line around it. The male mallard has a green head and neck with a white ring bordering it. It has a brown chest, a whitish-gray underside, brown wings and a yellow bill. The female mallard is mottled brown and tan with a white tail and an orange bill.