Nice. It’s a Navajo-style “Thunderbird” pendant with turquoise, but I think not actually Navajo work as such. Those are usually in full or coin silver and have the head of the bird facing to one side, so you see one eye and the beak.
There were several companies selling ‘Navajo-inspired’ jewellery at tourist locations around the US in silver, silver plate and nickel silver from around the 1920s onwards, … notably Bell Trading Post (founded in Albuquerque, New Mexico in 1932). It may not be from Bell, but I think is from around that era. Close examination may reveal a maker’s mark. Early Bell pieces have a mark that includes a bell, sometimes as a sign hanging from an arrow post.
Below is a later Bell piece… this one from the 1960s with faux turquoise and the thunderbird updated to a modern stylised form, but essentially the same design, with the thunderbird shown full-face. I couldn’t readily find an older one that matches your design, but I didn’t hunt extensively.