Greetings,
You have me at a bit of a disadvantage not being to actually examine the artifact up close and personal; however, if I were to give you my "gut" feeling on the matter it would be this. First let me say, this applies only if you purchased the artifact or got it from a friend, if you actually found the item on site then disregard as just ramblings. It appears to me that the item is of recent manufacture. I see many such items at gem and mineral sales normally they are called hawk or eagle effigies..... The base tang knives that another poster showed are indeed artifacts similar in nature, but you can readily see the fine chipping and quality materials they are made from. As I said its hard to tell from the photo and not knowing the history of your piece. Just my opinion on the matter. I have been collecting for over 30 years and have never seen an authentic piece such as this. If it truly is so, you have an oddity to say the least.