Haiku such as "kyo" () may look like two syllables to English speakers but are in fact a single "on" (as well as a single syllable) in Japanese. In 1973, the Haiku Society of America noted that the norm for writers of haiku in English was to use 17 syllables, but they also noted a trend toward shorter haiku. Shorter haiku are very much more common in 21st century English haiku writing. Some translators of Japanese poetry have noted that about 12 syllables in English approximate the duration of 17 Japanese "on". Also in translations four lines is more appropriate for
Haiku in English poets and scholars attempting to understand English-language haiku aesthetics and history include William J. Higginson's "Haiku Handbook" (McGraw-Hill, 1985) and Lee Gurga's "Haiku: A Poet's Guide" (Modern Haiku Press, 2003). Significant contributors to American haiku include Hackett, Virgilio, Charles B. Dickson (1915–1991), Elizabeth Searle Lamb (1917–2005), Raymond Roseliep (1917–1983), Robert Spiess (1921–2002), John Wills (1921–1993), Anita Virgil (b. 1931), and Peggy Willis Lyles (1939–2010). Other major figures still active in the American haiku community include Lee Gurga, Christopher Herold, Gary Hotham, Jim Kacian, Michael McClintock, Marlene Mountain, Marian Olson, Alan Pizzarelli, Alexis Rotella, John Stevenson, George Swede, vincent tripi, Michael