Relevance: GS Paper 3 (Environment & Biodiversity) | Source: The Hindu

Five captive-bred slender-billed vultures have been released into a soft release aviary in Biswanath (Assam) to boost their declining population.

More About the News

The initiative is led by the Kaziranga National Park and Tiger Reserve authority in collaboration with the Bombay Natural History Society. This marks India’s first release of captive-bred slender-billed vultures, a major milestone in species recovery.

About the Species

• Common Name: Slender-billed vulture
• Scientific Name: Gyps tenuirostris
• Conservation Status: Critically Endangered (IUCN Red List)
• Habitat: Open country, grasslands, and woods.
• Found mainly in the Gangetic plains, Assam, northern Bangladesh, southern Nepal, Myanmar, and Cambodia.
• Appearance: Long, slender neck, black head (not feathered), and thin bill.
• Key Fact: Unlike the Indian vulture, this species nests in trees
• Decline caused largely by diclofenac toxicity (a veterinary drug)

Key Features of the Initiative

• Operates under: National Vulture Conservation Programme
• Speared headed by: Assam Forest Department + Bombay Natural History Society
• Location: Soft release aviary at Biswanath Forest Division
• Source: Vulture Conservation Breeding Centre, Rani (Assam)

What is a Soft Release Aviary?

• A controlled enclosure where animals are kept temporarily before release
• Allows acclimatisation to natural surroundings
• Improves survival rate after release into the wild

Objectives

• Rebuild wild population of slender-billed vultures
• Restore ecological balance (vultures as scavengers prevent disease spread)
• Promote community participation and eco-tourism
• Strengthen biodiversity conservation in Northeast India

Challenges

• Continued risk from toxic veterinary drugs (diclofenac)
• Habitat loss and food scarcity
• Need for long-term monitoring and tagging systems

Way Forward

• Strict enforcement of ban on diclofenac use
• Expansion of vulture-safe zones
• Strengthening community awareness and participation
• Scaling up captive breeding and phased releases

UPSC Value Box

Aspect	Details
Why this issue matters for environment	Vultures play a critical role as natural scavengers by preventing the spread of diseases from carcasses, thereby maintaining ecological balance and public health.
Challenge and Reform	The biggest challenge remains continued exposure to diclofenac and habitat degradation. The key reform is strict enforcement of drug bans along with expansion of vulture-safe zones and long-term conservation monitoring.

Exam Hook

Prelims (MCQ)

Consider the following statements:

• Slender-billed vulture is classified as Critically Endangered.
• Diclofenac use in livestock is a major cause of vulture decline in India.
• Soft release aviary is used for immediate release without acclimatisation.

Which of the statements given above is/are correct?

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

Answer: (a)

One-line Wrap

The release of captive-bred slender-billed vultures marks a landmark step in restoring India’s critically endangered scavenger population and ecological balance.