These are Birdman Bats out of Cali. They were just MLB approved not long ago, and don’t have tons of clients yet, but Puig uses them quite a bit. Each bat is handmade.
Thanks! This one was used by Ryan January in extended ST for the Diamondbacks, and I saw that one of the Rockies minor leaguers was swinging one, too. Got to be the weirdest bat logo I've ever seen.