Escape distance

（重定向自Flight distance）

Flight initiation distance (FID) buffer from critical wildlife area. [1][2]

Because most of birds flee from humans, ornithologists and birdwatchers sometimes use digiscoping equipment, allowing them to take pictures from long distances.

The escape distance (ED) of animals is the distance within which an animal will, upon observing a disturbing stimulus such as a human, exhibit an escape response, such as flushing (in the sense of being "flushed out") in the case of birds. More specifically, it is the upper bound of the set of distances within which the animal is certain to exhibit such a response should it observe the stimulus. It may also be termed flight initiation distance (FID), flush distance, or escape flight distance. The alert distance (AD) is the distance, by definition greater, within which the animal changes its behaviour in a manner enabling it to better observe the stimulus, as by raising the head in an alert posture, but does not necessarily flee unless the stimulus is also within the escape distance. These measures are usually used to quantify the tolerance of wildlife to humans.

单词	Flight distance
释义	Flight distance 原声例句科学60秒听力 2014年5月合集 Longer flight distances means coughs and sneezes can often reach ventilation systems. 远距离意味着咳嗽和喷嚏能更频繁的到达通风设备处。世界奇趣图谱 That more than doubles the flight distance of the current AC-130s. 这比当前 AC-130 的飞行距离增加了一倍多。 CNBC全球经济分析 Regardless of which option you choose to take, or the duration of your delay, you’re also entitled to compensation relative to the flight distance. 无论您选择哪种选择，或延误时间长短，您还有权获得与飞行距离相关的补偿。英语百科 Escape distance （重定向自Flight distance） The escape distance (ED) of animals is the distance within which an animal will, upon observing a disturbing stimulus such as a human, exhibit an escape response, such as flushing (in the sense of being "flushed out") in the case of birds. More specifically, it is the upper bound of the set of distances within which the animal is certain to exhibit such a response should it observe the stimulus. It may also be termed flight initiation distance (FID), flush distance, or escape flight distance. The alert distance (AD) is the distance, by definition greater, within which the animal changes its behaviour in a manner enabling it to better observe the stimulus, as by raising the head in an alert posture, but does not necessarily flee unless the stimulus is also within the escape distance. These measures are usually used to quantify the tolerance of wildlife to humans.
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