科学与环境
Nightjar wings reveal a trade-off between hunting slowly and traveling far
来源: Phys.org - latest science and technology news stories · 发布于
The European nightjar (Caprimulgus europaeus) is a nocturnal migratory bird that travels between Europe and southern Africa each year. However, its wings are not only used for long-distance journeys. When hunting insects, the nightjar must be able to slow down, turn sharply and f
The European nightjar (Caprimulgus europaeus) is a nocturnal migratory bird that travels between Europe and southern Africa each year. However, its wings are not only used for long-distance journeys. When hunting insects, the nightjar must be able to slow down, turn sharply and fly at low speeds.
Researchers at Lund University have now shown how this trade-off is reflected in the bird's flight mechanics. The study is published in the journal PLOS Biology.
相关报道
Europe's car makers are in crisis. Will the threat of war rescue them?
Auto executives across Europe hope rearmament can help them flex their industrial muscles once more.
feeds.bbci.co.uk ·
Scientists found Homo erectus 200,000 years earlier than expected
New fossils from South Africa are reshaping the story of early human evolution. Researchers have described 18 hominin fossils from Drimolen Cave, including an adult Homo erectus skull fragment dated to about 2 million years ago, supporting evidence that the species appeared in so
All Top News -- ScienceDaily ·
Cars torched and shops looted as anti-migrant violence erupts in South Africa
South Africa has experienced recurrent outbreaks of violence, often targeting migrants from neighbouring countries.
feeds.bbci.co.uk ·
Feds get ready to rewrite car headlight rules
One of the regulations that make vehicles in the US different from those in Europe or Japan is our headlight rules. They’re laid out in the Federal Motor Vehicle Safety Standards (FMVSS), and changing them is—or used to be—a lengthy, laborious process, which is a major reason aut
Ars Technica - All content ·