I'm making the skeleton of an Eurasian Eagle-Owl. I'm working on the rib cage. Some problems: I have 7 Ribs and 5 Sternal Ribs. Is that possible? Or did I loose some? And what are those 2 bones - one end has a small hole and the other and is very flat and pointed. The lost Sternum ribs? - but they don't look like it. Some comments on the rib cage? The first sternal rib looks to small? Thank you!!