In traditional cuckoo clocks, the “coo coo” sound is derived from a system of bellows pushing air through two wooden whistles to recreate the distinctive two-note call of the common cuckoo.

He shares the family passion for clocks, traveling to shows and conventions to learn more about clocks of all kinds, especially cuckoo clocks from the Black Forest.

HOLLAND — If you think there’s something cuckoo in Holland these days, there is. Former electrical engineer Dan Winebrenner is opening Holland Clock Co., a store specializing in new and ...