BB, your bird is Elio Raffaeli. This is a standard form, and many glassmakers made birds that were shaped like this. I can't tell one from the other without looking at a signature. Some of these type birds were made for Oggetti and don't have another signature. I've wondered who made the unsigned Oggetti birds -- maybe many people?
Your bird would look great in the zoo. If you would like it in there, just email me a picture and your full name and I'll put it in there. Also the size of the bird. (Beg, beg, beg)