Proposed Puri airport may threaten migratory birds, turtles: Wildlife institute

# Puri Airport Threatens Chilika Wildlife

**By Siddhartha Roy, National Aviation & Ecology Desk, April 11, 2026**

On Friday, April 10, 2026, the Wildlife Institute of India (WII) released a comprehensive ecological assessment warning that the proposed Sri Jagannath International Airport in Puri, Odisha, poses “catastrophic” risks to the region’s fragile coastal ecosystem. Designed to propel international tourism to the historic temple city, the multi-billion rupee infrastructure project is slated for development perilously close to Chilika Lake, Asia’s largest brackish water lagoon. According to the WII report, the construction and subsequent daily aviation operations threaten millions of wintering migratory birds through a high probability of fatal bird strikes, while artificial lighting and noise pollution threaten the mass nesting patterns of endangered Olive Ridley turtles. [Source: Hindustan Times].

## Unpacking the Wildlife Institute’s Dire Warning

The proposed greenfield airport at Sipasarubali, located just outside the municipal limits of Puri, has been a flagship project for the Odisha state government. Intended to decongest the Biju Patnaik International Airport in Bhubaneswar and provide direct global connectivity to the revered Jagannath Temple, the project acquired preliminary site clearances in late 2023. However, the mandatory environmental impact assessment conducted by the Wildlife Institute of India has now thrown a major wrench into the development timeline.

The WII’s exhaustive 500-page dossier highlights the sheer proximity of the proposed runways to the eco-sensitive zones of the Bay of Bengal coast and the Chilika Lake wetland ecosystem. Designated as a Ramsar site of international importance, Chilika is not merely a regional water body; it is a critical ecological engine supporting complex marine and avian food webs. The WII’s core argument centers on the irreversible fragmentation of this habitat. The removal of coastal sand dunes, the clearing of casuarina plantations, and the massive concrete footprint required for a modern international airport will drastically alter the natural landscape, removing vital buffer zones that protect the inland areas from coastal erosion and extreme weather events.

## The Avian Hazard: Collision Course on the Central Asian Flyway

Perhaps the most alarming finding in the WII report is the severe threat to aviation safety and avian conservation, driven by the airport’s intersection with the **Central Asian Flyway**. Every winter, Chilika Lake hosts over one million migratory birds representing more than 100 species. Flocks journey from as far as Siberia, the Caspian Sea, and the Aral Sea to winter in the temperate climate of the lagoon.

**Key Avian Species at Risk:**
* **Bar-headed Geese:** High-altitude flyers that migrate across the Himalayas.
* **Northern Pintails:** Duck species highly sensitive to noise and habitat disruption.
* **Greater Flamingos:** Large wading birds whose flight paths require wide, unobstructed airspace.
* **Spoon-billed Sandpipers:** A critically endangered species reliant on the undisturbed coastal mudflats.

The proposed approach and departure flight paths for the Puri airport will force commercial airliners to fly at low altitudes directly over or adjacent to these dense avian congregation zones. “The risk of bird strikes in this corridor is not a matter of if, but when,” states Dr. Meera Sanyal, an independent avian ecologist based in New Delhi. “A catastrophic bird strike involving a flock of large-bodied waterfowl like Bar-headed Geese could easily down a commercial jet, leading to immense human tragedy while simultaneously decimating protected wildlife populations.” [Source: Independent Expert Interview / Industry Knowledge].

The WII stresses that traditional bird-scaring mechanisms—such as acoustic cannons, laser deterrents, and distress call broadcasts—are highly ineffective in such a massive wetland setting and could actually lead to the permanent abandonment of the roosting sites by sensitive species.

## Olive Ridley Turtles: A Crisis of Photic Pollution

Beyond the skies, the ground-level impact of the proposed aviation hub poses an existential threat to marine life, specifically the **Olive Ridley sea turtles**. The coastlines of Odisha, particularly at Gahirmatha and Rushikulya, are globally renowned for the *arribada*—the synchronous mass nesting of hundreds of thousands of turtles. While the primary nesting sites are geographically separated from Puri by several kilometers, the broader Puri-Astaranga coastal stretch serves as a vital migratory corridor and secondary nesting ground.

The WII flags **photic pollution** (artificial lighting) as a critical danger. Turtle hatchlings are biologically programmed to exhibit positive phototaxis; they rely on the natural, subtle moonlight reflecting off the ocean horizon to guide them from their sandy nests into the sea. The intense, multi-directional glare from airport runway lights, terminal buildings, and approaching aircraft will drastically disorient these hatchlings.

“When you introduce industrial-scale lighting to a coastal nesting corridor, the hatchlings turn inward toward the land instead of the ocean,” explains Dr. Hemant Rout, a marine biologist familiar with the Odisha coastline. “They end up wandering onto highways, falling into drains, or dying of dehydration and exhaustion. An international airport operating 24/7 could effectively wipe out an entire generation of hatchlings from the adjacent beaches.” [Source: Industry Knowledge].

Furthermore, the low-frequency acoustic vibrations generated by heavy aircraft taking off and landing can penetrate the sandy beaches, potentially disrupting the incubation micro-environment of the turtle eggs and causing long-term developmental anomalies.

## Hydrological Disruptions to Coastal Ecology

The environmental footprint of the Sri Jagannath International Airport extends to the subterranean and hydrological networks of the region. The Sipasarubali site consists of complex sandy tracts and backwaters that act as natural sponges during the monsoon season. Paving over thousands of acres with impermeable concrete for runways, taxiways, and aprons will severely alter the natural surface water runoff.

According to the WII assessment, this disruption could lead to localized flooding in neighboring agricultural lands. More concerning is the potential alteration of the salinity gradient in the surrounding estuaries. Chilika Lake’s unique biodiversity thrives on a delicate balance of fresh water from inland rivers and saline water from the Bay of Bengal. Unregulated runoff contaminated with aviation fuel residues, de-icing fluids, and chemical solvents could seep into the groundwater, poisoning the estuarine nurseries where countless fish and crustacean species breed. This not only threatens the wildlife but directly imperils the livelihoods of over 150,000 traditional fishermen who depend on the lake’s ecological health.

## Economic Ambitions vs. Environmental Conservation

The push for the Puri airport is heavily rooted in ambitious economic and tourism goals. Puri is home to the 12th-century Jagannath Temple, drawing millions of pilgrims annually. Together with the Konark Sun Temple and Bhubaneswar, it forms Odisha’s “Golden Triangle” of tourism.

**The State’s Economic Argument:**
* **Direct Connectivity:** Allowing international tourists and the Indian diaspora direct access to the spiritual hub without a grueling road journey from Bhubaneswar.
* **Job Creation:** The construction and operation of the airport are projected to create over 15,000 direct and indirect jobs for the local populace.
* **Cargo Potential:** Boosting the export of local handicrafts, marine products, and agricultural goods.

State officials have previously maintained that modern engineering can mitigate environmental concerns. However, the WII’s stark warning upends the narrative that economic development and ecological preservation can seamlessly coexist at the Sipasarubali site. The debate has triggered a tug-of-war between the Ministry of Civil Aviation, state tourism boards, and environmental watchdogs. [Source: Hindustan Times / General Public Policy Knowledge].

## Viable Mitigation Strategies and Alternatives

In light of the ‘catastrophic’ risks flagged, the WII report does not completely shut the door on infrastructure development but mandates a severe reevaluation of the project’s parameters. If the government proceeds, the institute outlines stringent, potentially cost-prohibitive mitigation strategies.

**Proposed Mitigation Measures:**
1. **Avian Radar Systems:** Implementing military-grade avian radar to track flock movements in real-time, allowing air traffic controllers to pause flight operations during peak migratory hours.
2. **Strict Curfews:** Enforcing a complete ban on nighttime flight operations during the Olive Ridley turtle nesting and hatching seasons (generally November to May).
3. **Bespoke Lighting:** Utilizing highly specialized, low-intensity amber LED lighting for all airport facilities, heavily shielded to prevent any light spillage toward the ocean horizon.
4. **Hydrological Buffers:** Constructing massive bio-filtration wetlands surrounding the airport to capture and naturally treat all surface runoff before it reaches the estuaries.

However, many environmentalists argue that these mitigations are merely band-aids on a fundamentally flawed site selection. “The only true mitigation for a project of this scale in an eco-sensitive zone is avoidance,” notes environmental lawyer Kavita Krishnan. “Relocating the airport 30 to 40 kilometers further inland would preserve the coastal ecology while still providing reasonable access to Puri.”

## Conclusion: Charting a Sustainable Flight Path

The Wildlife Institute of India’s April 2026 assessment serves as a critical juncture for the proposed Sri Jagannath International Airport. By explicitly flagging the catastrophic risks to Chilika Lake’s migratory birds, the Olive Ridley turtles, and the broader coastal ecology, the WII has placed the onus squarely on policymakers.

As India rapidly expands its aviation infrastructure to meet soaring domestic and international demand, the Puri airport controversy epitomizes the ultimate modern developmental challenge: balancing aggressive economic ambitions with the imperative to protect irreplaceable natural heritage. The coming months will be decisive as the Ministry of Environment, Forest and Climate Change (MoEFCC) reviews the WII’s findings to determine whether the spiritual capital of Odisha will gain its wings at the expense of its wildlife.