vintage & antique figural light bulbs for old Christmas lights, birds glass & plastic

Lot of two little bird light bulbs with the old tiny socket fitters - we don't have any strings of the old Christmas lights to test these, but these are so sweet you could display them even if they don't light!

The bluebird is painted glass, with some wear to the paint. The yellow canary is sort of like a blow mold plastic. Neither seems to be marked. And both measure about 3 3/4" long.