This article presents the results of the analysis of the morphometric structure of white Volga guineafowl's bone tissue. Histoarchitectonics of guineafowl bones' compact tissue is presented by circulatory-parallel structure; mixed, osteon, chaotic, and radial structure has been noted in many sectors and areas of bone. There are 4 ways of osteon arrangement in long bone's compact tissue of guineafowls: as zones, islands, scattered, and interspersed with circulatory-parallel structures. The walls of deep-lying osteons in the bones of birds under research (regardless of their age) are thicker than those of superficial osteons. The cross-section dimension of large Haversian canals in perimedullary zone in all long bones is bigger than in subperiosteal zone. © 2015 Kulikov et al.