Eco-ducts or eco-bridges are bridges used to improve wildlife connectivity that often gets disrupted with the construction of highways or other anthropogenic activity like logging. These may be in the form of canopy bridges for arboreal species, concrete underpass or overpass ducts for larger species and culverts or amphibian tunnels. Size and location are two of its most important aspects. The Ramnagar forest division in Uttarakhand built its first eco-duct for reptiles and small mammals recently.

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