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Differential identifiability between chosen North American gallinaceous skeletons and the effect of differential survivorship

Differential identifiability - the variation in the ease with which skeletal parts can be identified in samples of their bones - affects the presence and abundance of galli- naceous birds reported in the zooarchaeological record. In this paper, I examined how the distinctiveness of morphological characters among 27 fossil classes of the gallinaceous birds: Bobwhite Colinus virginianus; Ruffed Grouse Bonasa umbellus; Prairie Hen Tym- panuchus cupido; and Wild Turkey Meleagris gallopavo may limit the researcher's abil- ity to identify an archaeological bird bone specimen. The results and discussion: 1) demonstrate that the morphology of bird bones may limit taxonomic distinctions even at the high taxonomic levels of order and subfamily; and 2) present three patterns relating the differential identifiability of fossil classes to their differential survivorship. Aware- ness of the effects of these two factors potentially increases researchers' ability to explain the occurrence and abundance of "rare" bird taxa in the archaeofaunal record.