The scenic Rajgir hills in Bihar, long famed for their tourist appeal, are now gaining global recognition as a critical sanctuary for avian diversity. Recent scientific surveys have revealed the region is attracting an unprecedented number of bird species, including rare migratory visitors from distant continents, marking it as a premier birdwatching destination.
Record Numbers in Winter Bird Surveys
The Department of Environment, Forest and Climate Change (DoEFCC) conducted two comprehensive bird surveys in the area surrounding the Rajgir Zoo Safari, Nature Safari, and the adjoining wildlife sanctuary. The first survey took place in February 2025, followed by a second in December 2025.
The results were staggering. The initial count documented 109 different bird species, which included 29 migratory birds. Remarkably, the winter survey showed a significant increase, with the number soaring to 135 distinct species, including 33 migratory birds. "This shows the Rajgir hill region is home to an extremely rich and diverse variety of bird species," said Ram Sundar M, Director of the Rajgir Zoo Safari.
Rare Sightings and Ecological Significance
The surveys led to several exciting discoveries. The first survey confirmed the presence of Central Asian migratory warblers like the sulphur-bellied warbler and the yellow-browed warbler. Perhaps more crucially, it recorded endangered species such as the Indian vulture and griffon vulture, underscoring the area's role as a refuge.
However, the standout finding came in December. Officials recorded the first-ever sighting of the Eurasian sparrowhawk in Nalanda district. "This proves that the landscape of Rajgir is connected to international migratory bird routes extending from Europe and Central Asia to the Indian subcontinent," explained a DoEFCC official.
Other notable winter migrants spotted include:
- Scaly thrush and orange-headed thrush
- Indian pitta
- Large hawk-cuckoo
- Siberian stonechat
The surveys also highlighted an impressive diversity of birds of prey, including the Bonelli’s eagle, black-winged kite, and migratory raptors like the long-legged buzzard.
Warbler Diversity and Conservation Efforts
A major highlight was the warbler population. Across various habitats—from paddy fields to forest edges—a total of 11 warbler species were documented. This list includes the booted warbler, Blyth’s reed warbler, and the clamorous reed warbler.
Authorities attribute this thriving avian population to sustained conservation work. "Continuous soil and moisture conservation initiatives... increased water levels in reservoirs, creating ideal habitat conditions for migratory birds," noted Ram Sundar. This ecological health provides a safe winter refuge for both migratory and resident species.
Recognizing this new ornithological wealth, the Rajgir Zoo Safari is expanding its focus. "The Safari guides are being trained to identify migratory birds so that they can share better information about these birds with tourists," he added, ensuring visitors can fully appreciate the melodic calls that now enhance the region's natural beauty.
