Blue Jays are known for their loud, distinctive calls, including a harsh "jay-jay" sound and a variety of other calls. However, when using intrapair communication, Blue Jay calls are used between members of a pair for bonding, coordination, and to maintain contact. Some of these calls have been described as soft, low, and chattering, and some people may perceive them as a clicking sound. These calls are usually made by both males and females, and are often heard when the birds are in close proximity to each other, such as when they are nesting or roosting together.