There are three major families of shorebirds: 1  Waders, about 220 species, include sandpipers, lapwings, snipes, plovers, stilts and various other species. These birds inhabit coasts and shorelines, as well as other open habitats. 2  Gulls, terns, skuas, jaegers and skimmers form a group of a little over 100 species.
The compass was probably invented in the Qin Dynasty (221-206BC) by Chinese fortune-tellers who used the lodestones to construct their fortune telling boards.
(The Magnetic Compass invented in the 1st century by people in the Han Dynasty). The Magnetic Compass was created early in the 1st century CE when a man in China noticed that lodestone acted like a magnet and could be used to show direction.Back then the compass looked completely different than it does today.nother great invention in the Han Dynasty time period is paper. Paper was created in the 2nd century BCE. Before paper scholars were writing on rolls of silk which was not a bad source for writing.