Between the origin of the Coracoid artery from the subclavian, and the point where the Coracoid artery passes the medial edge of the Coracoid, several branches are given off.
"Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae"
Marion Anne Jenkinson
In S. inca the sternal artery arose either from the Coracoid artery, or independently from the subclavian.
"Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae"
Marion Anne Jenkinson
In no case did I find more than one Coracoid artery on a side.
"Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae"
Marion Anne Jenkinson