Tern make up the clutch. Most species feed on fish caught by diving from flight, but the marsh terns are insect-eaters, and some large terns will supplement their diet with small land vertebrates. Many terns are long-distance migrants, and the Arctic tern may see more daylight in a year than any other animal. Terns are long-lived birds and are relatively free from natural predators and parasites; most species are declining in numbers due directly or indirectly to human activities, including habitat loss, pollution, disturbance, and predation by introduced mammals. The Chinese crested tern is in a critical situation and three other
Numerology (Ismailism) Numerology (Ismailism) Numerology is an element of Ismailis belief; the idea that numbers have religious meanings. The number seven plays a general role in the theology of the Ismā'īliyya, including mystical speculations that there are seven heavens, seven continents, seven orifices in the skull, seven days in a week, seven prophets, and so forth. Old Ismaili doctrine holds that divine revelation had been given in six periods (daur) entrusted to six prophets, also called "Natiq" (Speaker), who were commissioned to preach a religion of law to their respective communities. While the "Natiq" was concerned with the rites and outward shape