The present application discloses a container including: a housing including a primary portion for storing developer, and a secondary portion, which projects from the primary portion and is connected to a developing device; a conveying mechanism which conveys the developer in the primary portion to the secondary portion; and a detector which detects a state of the developer. The primary portion includes a facing wall which is situated at a boundary between the primary and secondary portions so that the facing wall faces a flow of the developer moving toward the secondary portion. The developer includes a flowing portion under the conveyance to the secondary portion by the conveying mechanism, and an adhering portion defined by an adhering layer made of developer adhered to the facing wall. The detector detects a decrease of the flowing portion and a decrease of the adhering portion individually.