Bird motif has always had an important place in Iranian artworks. Various patterns of birds have been presented in all types of Persian art like carpets. Bird motifs, both in abstract and naturalistic forms, can be found in Iranian carpet design. This paper, after studying the role of bird motif in Iran's art and literature, introduced the formal and conceptual aspects of the motif in "Kheshti" design pattern. For this purpose, some images of Kheshti carpets of Chaharmahal and Bakhtiari have been illustrated. This is a descriptive research and data collection has been accomplished using library-based studies, written literature and images
