This kind of material is not a part of the natural stone background found in Nadia's locale. It is found by Nadia in concentrations which indicate they are human deposits. Upon close examination these stones have been shaped or shaped by use wear and may represent the kind of "pre-Clovis" stone tool material archaeologists should be looking for in the search for the earliest Americans. Early peoples in America may not have used bifacial flint knapping technology but may have used bone tools and bone spear tips which have not survived time. Their other implements may have been expedient natural forms like these and the presence of iconographic material like these small bird sculptures supports the idea of a human source for the deposits.
Nadia's finds are geographically very close to finds seen in the recent posting of other stone figures identified by Duane in Prescott, Arizona.