Ducks have developed numerous adaptations, such as their feathers, camouflage, bills and flight skills. Many different types of ducks and waterfowl can exist in the same habitat because their feeding habits vary from one type of bird to the next. The diversity in the duck population is wide, and each species of duck has different features, no matter how similar they look.
Mallards have adapted the ability to take off from the surface of the water with an almost explosive force, in an almost vertical manner. Blue-winged teal ducks are what are referred to as dabbler ducks. These ducks feed by tipping forward and taking in a mouth full of water. The duck's bill is made so that it can filter out the food from the water, as well as filter the good and the bad food. The water dribbles out the side of the bill so that the duck can consume the food.
Some types of ducks dive for their food. Their ability to dive under the water means they are less buoyant than their dabbler counterparts. A duck's feathers are made to be water-resistant and help them float on the surface of the water. Air sacs in the respiratory system also help them float.