Guidepost 2: What are the four goals of the scientific study of human development, and what do developmental scientists study? 1  The study of human development seeks to describe, explain, predict, and modify development.  Ways of studying human development are still evolving, making use of advanced technologies.
Dabbling ducks eat plants, seeds, grasses and other small insects and animals that they find on or under the water. Ducks which have broad beaks, (shovelers) sift their food for insects, snails and seeds from the mud.
âDabblersâ are ducks that tip up in order to feed, scrounging through shallow water and mud in search of plants and insects, and these ducks will also feed readily on land. The most common dabbling duck species is the mallard, but the northern pintail, American wigeon and different teals are also dabblers.eal. Teals are different types of dabbling ducks that often have brightly colored, distinctive plumage, including fantastic speculum coloration. These ducks prefer to feed along the surface of the water as opposed to tipping up. Teal species include the cinnamon, green-winged and silver teal.