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.
Enter Bird's Name in Search Box: There are at least twenty-eight types of ducks living in North America, not included in these water birds are the eiders, loons, mergansers, smews, scoters and teals.Among these different types, the birds can be grouped again into puddle, aka dabbling and diving ducks.The dabblers mostly feed in smaller bodies of shallow water or along shorelines, where they are able to tip their bodies forward to reach their food on the bottom.mong these different types, the birds can be grouped again into puddle, aka dabbling and diving ducks. The dabblers mostly feed in smaller bodies of shallow water or along shorelines, where they are able to tip their bodies forward to reach their food on the bottom.