Two Beaded Pendant Neck-Bands; Are They Newer?

Both of these are ~20 1/2" long, an' each weigh ~40.5 grams The amber one has 2 cast faceted teardrops, an is fully finished at the upper end; the white one has been reduced at the upper end, then wrapped; the Thunderbird leads me to suspect far more recent origin than the amber. Beyond that I'm clueless; these both are part of the memory-care ladies hoard.
What do y'all see here of any significance? Thanks for lookin'!

 

Am I the first to comment? The yellow one looks older, say, 1920s, based on the loop fringe and large molded beads. The other could be as old but I'm not sure. The thunderbird has been popular for many decades and was used in a lot of mid-century beaded pieces by crafters. I suspect true Natives may have used it in loomed beadwork, too.