Arthropods in culture astrological signs of the zodiac. Culture consists of the social behaviour and norms found in human societies and transmitted through social learning. Cultural universals in all human societies include expressive forms like art, music, dance, ritual, religion, and technologies like tool usage, cooking, shelter, and clothing. The concept of material culture covers physical expressions such as technology, architecture and art, whereas immaterial culture includes principles of social organization, mythology, philosophy, literature, and science. This article describes the roles played by arthropods in human culture. The arthropods are a phylum of animals with jointed legs; they include the insects, arachnids such
Bird feet and legs the rear like the propeller on a motorboat. Grebes and many other waterfowl have shorter femur and a more or less narrow pelvis, too, which gives the impression that their legs are attached to the rear as in loons. Because avian forelimbs are wings, many forelimb functions are performed by the bill and hindlimbs. It has been proposed that the hindlimbs are important in flight as accelerators when taking-off. Some leg and foot functions, including conventional ones and those specific to birds, are: Typical toe arrangements in birds are: The most common arrangement is the anisodactyl foot, and second among