The cuckoo clock has become a timepiece becoming popular in the 18th century, its characteristics are often carved leaves and animals, with a chirping bird that rolls from closed doors on each hour. The first ever made cuckoo clocks, like many other newly developed technologies, were really bulky and large. While it is unknown who exactly made the first cuckoo clock, it is known that they were actually found in the black forest (Germany), in the early 1600's. Despite the faint knowledge of its origins, here is a more common idea which suggest the cuckoos origins, as following:
During the 1600's a merchant left the black forest in order to sell goods (rumor has it glass) when he returned, he brought back the cuckoo clock, although no-one knew from where. however, in spite of all the mystery, someone within the black forest was inspired, and began to design their own cuckoos. Eventually people found them more reliable, and they became very popular within parts of Germany, replacing hourglasses. This also started the earlier traditions of clock making. As the cuckoos clock gained popularity, people started to compete against each other, to make nicer and more detailed clocks. by the early 1800's there were 688 clock makers and 582 clock peddlers.
(here is my cuckoo clock)