Vintage Rhinestones Eagle/ Thunderbird Pendant Necklace Art Deco best Style

This is a super unique necklace that consist of a large eagle or Thunderbird in the center, it is held on both sides by a Silvertone Chain. I am not sure what the metal content is. It definitely has an art deco appearance to it although it is not of that era. Really great and fun necklace that gives off a lot of reflective lights.No missing rhinestones. Please see photos for approximate Measurements and further details. Fully extended the chain measures approximately 21.75 inches long with the ability to adjust and make best it a bit shorter, More of a choker style. Necklace is approximately 3.75 inches wide which would be the birds wingspan. It is almost 2 inches tall.