A three years old male pigeon weighing 400g (racing homer) was presented to Madras Veterinary College Teaching Hospital with the history of soft tissue growth on the keel region for the past six months and gradually increase in size was noticed. Physical examination revealed large tennis ball size soft tissue mass on the keel region. Cytological examination revealed the presence of inflammatory cells with serosanguineous background. Radiological examination revealed presence of soft tissue mass on the keel bone with no bony involvement. Surgical resection of tumour mass was performed under general anaesthesia. Histopathological examination confirmed liposarcoma in a pigeon. The bird recovered uneventfully on 10 th post-operative day without any complications.

The present study was aimed to study the comparative anatomy of Pectoral bones in pigeon and conure bird. In both the birds Pectoral bones were composed of Humerus, Radius and ulna, carpals, Carpometacarpus and Digits. Humerus of conure on its medial tuberosity well marked facet was noticed. Bones of forearm in both pigeon and conure were composed of thicker ulna and slender Radius. Carpometacarpus was composed of three bony elements. Digits of both the birds were three in number. Pigeons have strong well developed Pectoral bones and are strongest flyer when compared to that of conure. The anatomical feature of Pectoral bones in pigeon was similar to that of conure but had few variations.