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A Series of bird skeletons collected in areas of Paraguay without severe human distrubance were examined for ostelogocial abnormalities. The majority of pathological lesions were the result of tauma and a significant portion to the pectoral girdle. Several groups showed a relatively high prevalence rate, e.g. hawks and owls, which is presumably related to the method of food capture. The interpretation of the results is discussed in regards to zooarchaeological analysis for which it is important to separate natural rates of bone disorder from other potential influences before human-induced factors can be implicated.