To this end he creates the Harbinger Foundation, which actively searches for potential Harbingers. Birds were considered the harbingers of spring, thus they were a commonplace pysanka motif. The Roman poet Ovid described jackdaws as harbingers of rain in his poetic work "Amores". Among the Kikuyu of Kenya, it was believed that owls were harbingers of death. In general, owls are viewed as harbingers of bad luck, ill health, or death. The crow-like birds are consistent with the book's signature harbingers of the Dark&colon; the rooks. Trenchers were as much the harbingers of open-face sandwiches as they were of disposable crockery. Rudhyar regarded the 'true early hippies' as potential harbingers of a New Age. In other circumstances, harbingers of inconsiderable demands were killed as a declaration of war. Zuul and Vinz Clortho are the primary servants and harbingers of Gozer The Gozerian. The above quotation puts informally the harbingers of a thunderstorm. Indeed, The Harbingers of Death themselves refer to him as their "teacher". Its practitioners were among the harbingers of modern painting in India. Content includes a chapter on coronaviruses titled "SARS and MERS&colon; Harbingers of Things to Come". Two booster tapes were released following the success of "The Harbingers".