High Quality Content by WIKIPEDIA articles! Wildlife crossings reconnect habitats, allowing animals to cross roads safely. They involve underpasses, overpasses (mainly for large or herd-type animals), viaducts, amphibian tunnels, and tunnels (for small mammals such as otters, hedgehogs, and badgers) and green roofs (for butterflies, birds). Especially in Europe, they are widely used as part of the efforts to protect and reestablish wildlife.The Humane Society reports that the more than 600 tunnels installed under both major and minor roads in the Netherlands have helped to substantially increase, for example, population levels of the endangered European badger. The longest ecoduct, at 800 m, which spans a highway, a railway and a golf course, is also located in the Netherlands, near Crailo.

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