Gakken Co., Ltd. (Shinagawa-ku, Tokyo; President and Representative Director: Tatsuya Nanjo), a group company of Gakken Holdings Co., Ltd. (Shinagawa-ku, Tokyo; President and Representative Director: Hiroaki Miyahara), announced the start of pre-orders for "Otona no Kagaku Magazine: Atarashii Hato Dokei" (scheduled for release on July 30, 2026) on July 1, 2026. ■ An unprecedented mechanism: a bird flaps its wings and chirps. The latest issue of Otona no Kagaku Magazine, "Atarashii Hato Dokei," is a build-it-yourself cuckoo clock that reproduces the flapping and chirping of a bird entirely through its mechanism. Once every hour, a bird flaps its wings and chirps beautifully to announce the time. The magazine has packed all the intricate mechanism technology it has cultivated into this small cuckoo clock. The outer box is transparent, allowing you to admire the precise movements and structure of the intricate mechanics even after assembly. ■ The most intricate mechanism in Otona no Kagaku Magazine history: a cuckoo clock that allows you to fully enjoy the fun of mechanisms. "Atarashii Hato Dokei" is powered by a single motor. The motor transmits power to over 50 custom parts and gears for this kit, driving various mechanisms such as the bird's complex movements and its chirping at varying pitches. Gears that move the bird. The bird swings its body left and right while simultaneously moving its beak, wings, and tail feathers. The roof at the top is removable. The small body is packed with intricate mechanics. The chirping is not electronic. Air is sent through an internal miniature pump and blown through a whistle to produce sound. The pitch changes depending on the size of the whistle's air chamber, reproducing a range of approximately one octave. A miniature pump and whistle that produce the bird's chirping. Approximately 50 parts. Many original parts, such as gears and cams, designed specifically for this cuckoo clock. By assembling each intricate mechanism one by o