The present study aimed to throw light upon the pectoral limb bones of common hawk cukoo (Hierococcyx varius) and yellow billed babbler (Argya affinis). Typical pectoral girdle was present in both the birds. The clavicles of common hawk cukoo joined at more open angle compared to yellow billed babbler. | Comparative morphological study of pectoral limb bones of common hawk Cukoo (hierococcyx varius) and yellow billed babbler (Argya affinis)