The call is a squeaky "sweek", and the song is "cheep cheep CHEEP CHEEP cheep". "Chirpy Chirpy Cheep Cheep" and "Sacramento" were played a lot on Scandinavian radio. Young birds produce a low cheep with the bill closed. Chicks initially cheep weakly, but soon develop a ' begging call. Cheep Cheep, Magic Racer and Dolly were shown as toy characters. In October 2010, the company launched Cheep, a social shopping service. Nestlings begin making a soft "cheep" at about a week of age. However, Cheep Cheep began behaving like a dog. The call is a series of sharp whistles, described as "cheep, cheep" or "yewk, yewk". With a cheep, cheep, cheep, cheep, cheep.