Native American? Help!

Native American? Came from the estate of a collector with many southwest Native American pottery pieces. (Black on Black Pueblo Juanita Pena,ect)It is a tripod piece with the three legs formed as birds. Unfortunately,the legs are boken (I have them) Does anyone know if this is a Native American? What affiliation and probable dating? What would the purpose be for this design? THANKS for your expert opinions.