Skeleton’s comparative morphology of the Pelvic Girdle and the Hind Limb in representatives of different group of birds

Abstract

One of the main purpose of morphological researching is to define the adaptation of the animals to specific environmental conditions and find the relations between different groups of birds The skeleton of the pelvic girdle and the hind limb of birds from different ecological groups have been studied. The pelvic girdle is formed by the fusion of the synsacrum with three paired bones: ilium, ischium, and pubis. The bony framework of the hind limb consists of the femur, tibiotarsus, fibula, tarsometatarsus, and four digits. The structure of these skeleton elements is differ from one species of birds to another. There were taken 3 species of birds for the research: Black Tern Chlidonias nigra, Yellow-legged Gull Larus cachinnans (Charadriiformes) and Corncrake C crex (Gruiformes).