‘Acoustic lighthouses’ could warn birds about wind turbines

March 14, 2018 by  
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Birds and humans don’t always co-exist peacefully — each year millions of the small animals fly into buildings, wind turbines , cell towers, and even planes. William & Mary behavioral biologist John Swaddle is working to translate understanding of bird behavior into technology that could hopefully save their lives, including an Acoustic Lighthouse that would guide birds around man-made structures. Here’s how an acoustic lighthouse might work: a directional speaker mounted on a structure like a wind turbine would project a sound warning birds. While flying, birds align their bodies on a horizontal plane for ideal aerodynamics, according to Swaddle . And as their eyes are on the sides of their heads, they’re looking down, not where they’re flying. The sound would essentially prompt them to slow down, and when slowing down, birds lower their tail feathers, moving their bodies “from the horizontal plane to a more vertical position,” according to William & Mary, so they can see the structure and soar around it. Swaddle said, “It’s a bit like someone texting while they’re driving. If you honk your horn at them, they’ll look up.” Related: Painting Wind Turbines Black Could Prevent Thousands of Bird Deaths Every Year “The fundamental knowledge of how birds behave and respond to sound helps us derive these new technologies and solutions,” said Swaddle. He’s also developed a concept called Sonic Nets, intended to disrupt gatherings of birds in places like airports, parking lots, or crop fields. Swaddle recently spoke at the American Association for the Advancement of Science (AAAS) annual meeting on reducing strike risk between birds and wind turbines and airplanes , and protecting crops, through an understanding of bird behavior. The journal Integrative and Comparative Biology published a paper written by Swaddle and former William & Mary graduate student Nicole Ingrassia on the acoustic lighthouse concept in 2017. + William & Mary Via Science Magazine Images via DepositPhotos , William & Mary video screengrab

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‘Acoustic lighthouses’ could warn birds about wind turbines

This hand-built island is the start of Copenhagens parkipelago of floating public spaces

March 14, 2018 by  
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A tiny wooden island floating in Copenhagen harbor is bringing life and interest back to the city’s waters. Australian architect Marshall Blecher and Magnus Maarbjerg of Danish design studio Fokstrot designed CPH-Ø1, an experimental floating island park buoyed by recycled plastic bottles that could bring about more floating public spaces all along the city’s waters. Created as a prototype for the Copenhagen Islands project, the 215-square-foot timber island is punctuated by a single linden tree and is temporarily located in Sluseløbet. Launched last year with support by Kulturhavn365, CPH-Ø1 first served as a resting area for adventurous Copenhageners who are invited to moor alongside the island by boat or kayak. The public space also doubles as a small events venue and, according to Dezeen , will host a lecture series next month about the future of harbor cities. CPH-Ø1 was constructed by hand in Copenhagen’s boat building yards using traditional wooden boat building techniques with locally and sustainably sourced materials. Related: Copper-clad Copenhagen landmark boasts Denmark’s most energy-efficient laboratories CPH-Ø1 is the first in what the designers hope will be a ‘parkipelago’ of nine islands that offer creative public spaces in the harbor, particularly in forgotten and unused areas. Future iterations may include a floating sauna island, floating mussel farms, floating gardens, and even a floating sail-in cafe—all of which will be open to the public. The islands can be connected together or float separately. + Copenhagen Islands Via Dezeen Images via Fokstrot

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This hand-built island is the start of Copenhagens parkipelago of floating public spaces

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