Latest Autonomous Recording Unit Stories
Humpback whales are known for their songs that can be heard from miles away and new research from a team of American biologists has detailed the whales singing habits as they roam the feeding grounds of the northwest Atlantic.
Like sentinels at their posts, an array of buoys equipped with underwater microphones and other sensors will be on duty in the Stellwagen Bank National Marine Sanctuary off the coast of Massachusetts for the next 30 months, recording sounds from whales, fish, ships and other sources around the clock.
Now hear this: After analyzing more than 18,000 hours of recordings from the swampy forests of eastern Arkansas, researchers at the Cornell Laboratory of Ornithology at Cornell University have released recordings offering further evidence -- including the legendary bird's distinctive double knock -- for the existence of the ivory-billed woodpecker, once thought extinct. These sounds were recorded in the same area of Arkansas where the species was rediscovered in 2004.
Cornell University researchers will present new audio evidence supporting the existence of the phantomlike ivory-billed woodpecker Aug. 24 and 25 at the 123rd American Ornithologists' Union meeting in Santa Barbara, Calif.
- A transitional zone between two communities containing the characteristic species of each.