The aim of this study was to describe the musculature of the pelvic limbs of a barn owl (Tyto alba). The specimen has powerful muscles, with a predominance in the development of the flexor muscles over the extensors. In general, there is similarity with the musculature described in other birds, especially raptors; however, it is important to highlight some differences, such as m. iliofibular is well developed and is located caudal and superficial to the m. lateral iliotibial; the m. femorotibial has only two heads; the ms. ambiens and fibular long were not observed in the specimen studied, but m. lateral thigh flexor was observed. The m. long digital flexor has only one head; the ms. perforating and perforated are highly fused and m. extensor digitorum longus I has a small muscular head.

The barn owl (Tyto alba) is protected as it is considered a beneficial species for agrosilvopastoral activities, the maintenance of ecosystems and for human health. The present descriptive study corresponds to an analysis of a barn owl carcass, where the bones of the pelvic, femoral, tibiotarsal, tarsometatarsal and phalangeal regions were studied. It is concluded that the studied specimen has bone structures similar to other birds, mainly raptors; however, the difference in sizes between the iliac crests, the depth of the fossa of the femoral head, the great fusion between the tibiotarsus and the fibula, the hypotarsus formed only by a lateral projection on the tarsometatarsal bone and the great development of the flexor processes of the nail phalanges.

The barn owl (Tyto alba) is protected as it is considered a beneficial species for agrosilvopastoral activities, the maintenance of ecosystems and for human health. The present descriptive study corresponds to an analysis of a barn owl carcass, where the bones of the pelvic, femoral, tibiotarsal, tarsometatarsal and phalangeal regions were studied. It is concluded that the studied specimen has bone structures similar to other birds, mainly raptors; however, the difference in sizes between the iliac crests, the depth of the fossa of the femoral head, the great fusion between the tibiotarsus and the fibula, the hypotarsus formed only by a lateral projection on the tarsometatarsal bone and the great development of the flexor processes of the nail phalanges.