Other vocalizations recorded during estrus include chittering and growling. The grey-rumped swift has a chittering call. It is located along the Brockman River within the Shire of Chittering. The non-metropolitan Shires of Gingin and Chittering surround Yanchep's northern and eastern boundaries. The route continues along Chittering Road to Chittering, following the Brockman River and its tributaries. The districts covered are Bindoon, Chittering, Gingin, Bullsbrook among others. As they mature, their song changes to a more adult-like chittering. Another small settlement, Elford Closes, lies to the north of Chittering. Muchea is a suburb of the Shire of Chittering. There is also a Catholic school in Lower Chittering, called Immaculate Heart College. A local developer is developing a parcel called Chittering Retreat into 45 rural residential lots. Lower Chittering consists largely of rural and rural residential properties. The song is a weak chittering, and the alarm call is "tssisk". The call is a chittering "chip cheree chip chip". Chittering Valley Tourist Way ends at Great Northern Highway, a short distance away from Bindoon.