The Sigur river valley acts as a crucial micro-habitat for herbivores, especially elephants, gaur and sambar and carnivores such as tiger, leopard, wild dog (dhole), sloth bear and striped hyaena for feeding, resting and denning.
Of the nine species of Vultures which exist in India, the critically endangered white-rumped vulture, long-billed vulture and king vulture (or) red-headed vulture and the endangered Egyptian vulture have been documented in the forests of Nilgiris Eastern Ghats landscape, which comprises the Sigur and Moyar Valleys.