美国科学60秒 SSS 2015-02-03

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Study in birds for a living might sound like a cool job but it is not without logistical challenges for us land down animals. I have a northern gannet, so a really large birds breeding on the top of the cliff.David Granite¹,  St Betty Colleges of the French national center for scientific research.  and from the bottom of the cliff, I could not see what was happening in their nests. I could not even see whether the birds were zoom² or not. 。。Grami says the technology offers a simple solution.  by drone carfully flown high altitude over the colony would have been be really  helpful. That's right, a drone, Grammy says  scientists and citizens are like a increasingly using drone to appoarch birds either for fun or the legitimate³ research. But they are taking flight without knowing how the aerial robot might affect their avian study subjects. So Grammy and his colleagues had a zoo employing a professonal drone pilot to flight  test drone near mallard ducks, with a 14 inch diameter quarter copter. They then got the permission to repeat the experiment on wild flamingoes, and green chicks in the connark, a huge wild land in southern France. After several hundreds flights, the researchers have found that the birds did not seem to care about the drone's colour or approach speed. And the equipment can get it close as 13 feet to the birds without disturbing them, as long as they did not approach over their heads, a angle associated with predators⁴. The study is in the Journal Biology Letters. All these high tech tools could be a boom to wild-life ecologists. But at the same time, you always have to assess the impact of technology you are using on animal welfare. And maybe drone welfare too, search youtube and you will find the birds' prey⁵, like some privacy aggregate⁶.. preserves drone  as a threat and make the technology crash later.

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