"A fourfold increase is not only a positive development but a matter of celebration," said Arvind Mishra, coordinator in Bihar and Jharkhand for the Indian Birds Conservation Network who conducted a latest survey on the species.

"In 2007, only 78 Garudas were counted in the district," Mishra told IANS over phone from Bhagalpur, 200 km from here, adding that now the birds are over 300 in number.

According to Mishra, it is a result of the conservation drive started by environmentalists and bird lovers with the help of local villagers. "We have created awareness among local people about their conservation and protection."

In Indian mythology, Garuda is considered the 'vahan' or carrier of god Vishnu.

Loss of nesting habitat and feeding sites through drainage, pollution and disturbance, together with hunting and egg collection, caused a massive dip in the population of the species.

Mishra first spotted the Garuda birds nesting and breeding in 2007 on a silk cotton tree near a village in the Ganga-Diara area in Bhagalpur. Prior to this, the species had never been seen in Bihar during its breeding period.

"I was excited when I found the endangered Garuda breeding in the flood plains (Diara) of the Ganga and Kosi rivers in the district for the first time," Mishra said.

The birds face very high risk of extinction if proper conservation efforts are not taken, he added.

Mishra, who has been studying birds and conducting surveys for conservation, said: "The birds are on the verge of extinction. Attempts are being made all over the world to conserve and save them."

There are only 1,100 Garuda birds, which are migratory in nature, around the world.

The Garuda, biologically known as Greater Adjutant, is classified as endangered on the International Union for Conservation of Nature (IUCN) Red List 2004 of threatened species and listed under Schedule IV of the Indian Wildlife (Protection) Act, 1972.

The large wading bird belongs to the Leptoptilos dubius species.

This huge stork has a naked pink head, a very thick yellow bill and a low-hanging neck pouch. The neck ruff is white. The bird looks like a vulture. Other than the pale grey edge on each wing, the rest of the Greater Adjutant's body is dark grey.

Juveniles have a narrower bill, thicker down on the head and neck, and entirely dark wings, Mishra said. A Garuda bird measures 145-150 cm (about three feet) in length and four to five feet in height.

Mandar Nature Club officials in Bhagalpur, working hard to create awareness among the locals on the need for protecting the birds, said villagers were proud that the Garuda birds have chosen this place for shelter and breeding.

Mishra said several villagers have been worshipping the birds and the tree on which they have made their nest.

He said the nesting season of the birds is between September and January. The nests, usually built right on the top of the tree canopy, measure 90-110 cm in diameter.

The Greater Adjutant was formerly found in South and Southeast Asia but now it breeds only in Assam and Bhagalpur in India, and in Cambodia.

"Bhagalpur is the third nesting region of this species in the world," said Mishra, who has been working on a project supported by the Wildlife Trust of India for the protection of the species.

"This could be a good sign for the survival of a good number of the species," he added.

The number of these bird species has declined drastically in the past few years.

The main threat they now face in Bihar is from the local nomadic Banpar tribes, which collect the eggs and chicks and hunt the birds for food.

Another threat, according to Mishra, is anti-inflammatory medicine Diclofenac that is used for cattle by veterinarians and which is a major reason behind pushing vultures to near extinction as they feed on the carcass of the dead animals. The Greater Adjutant also does the same and could be similarly affected by the medicine, he said. It feeds mainly on frogs and large insects but also young birds, lizards and rodents.

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