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.
Cornell Lab of Ornithology researcher Russ Charif will begin presenting the new audio evidence at 10:30 a.m. PST Aug. 24 in Lotte Lehmann Hall at the University of California-Santa Barbara (UCSB). Lab members Ron Rohrbaugh and Ken Rosenberg and Director John Fitzpatrick will also make presentations.
One recording suggests the presence of at least two birds: a signature double rap that sounds like an ivory-billed woodpecker drumming on a tree from a distance followed by a closer double rap. This drumming behavior is typical of many large woodpeckers closely related with the ivory-bill. Other recordings include sounds that resemble the ivory-billed woodpeckers distinctively nasal "kent" calls. The sounds were discovered by Cornell audio experts combing through 17,000 hours of audio files from autonomous recording units installed in the Arkansas woods and swamplands.
Blaine Friedlander | EurekAlert!
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
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In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
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In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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