author(s)
Sridevi P, Rajalakshmi K and SivaKumar M

abstract
The shoulder girdle of owl, pigeon and the crow was composed of three bones namely scapula, coracoid and clavicle. In all three species the scapula was sword like and slight curved in a craniocaudal direction and its proximal extremity consisted of an acromion process and a coracoid process. The crow had an additional intermediate process and its acromion process had a pneumatic foramen. The coracoid was the strongest bone of the shoulder girdle and its proximal extremity had a hook like appearance and presented a procoracoid, acrocoracoid in all the three species and scapular process prominent in owl and crow. The medial face of the acrocoracoid process had a well-developed pneumatic foramen in crow, about four foramina were seen in owl, while it was absent in pigeon. In owl a well-developed semi-circular procoracoid process and notch with a piercing foramen. The right and left clavicle fused distally to form a single bony component the furcula which was ‘U’ shaped in crow and ‘V’ shaped in owl and pigeon. The hypocleidium was noticed only in crow while the pigeon showed a thoracic process.