National Geographic : 2007 Jan
what's ina song? A headstanding male sings a solo (opposite). Jim Darling, a marine biologist (above), records humpback songs. Below are diagrams of whale behavior during two episodes at winter breeding grounds in Hawaii. Only the males sing, and Darling, describing their behavior, says, "A singer is often joined by another, nonsinging male. The singer usually stops singing, then one, the other, or both may swim off. The song clearly has a role in male relationships on the breeding ground and to date, there is no evidence that females are attracted to it." * Whale singing O Not singing MARCH 5,2000 Singing A listens to whale A is singer C, then joined by singer D-each whale B; for several B departs. -minutes. 66min A Distance traveled: i 5min A returns to singing, attracting whale E. '4.2mi 24 mi time: 5 min No interaction MARCH 22, 2002 Whale A travels A stops singing and while singing, a less common behavior than stationary singing. - A joins whale C; C stops singing, and the pair travels together silently. Breach NOTE:WHALEPATHSREVERSEDTOREADFROMLEFTTORIGHT NGM ART.SOURCE:JIM DARLING,WHALETRUST.