I disagree ....it's a bird that evolved over the years....
Here's a 1950 Chevy hood ornament, clearly a "bird"
https://www.chevsofthe40s.com/images...rge/986410.jpg
Here's a 53
https://www.chevsofthe40s.com/images...rge/986785.jpg
Here's a 54
https://farm4.staticflickr.com/3031/...1fc6b5db_b.jpg
http://www.classychevusa.com/cartima...01810032055570
And a 55
https://www.classicchevy.com/assets/.../sku/01-07.jpg
And finally a 56
https://i.ebayimg.com/images/g/94oAA...bs/s-l1600.jpg