Second edition of Puducherry Bird Atlas records 33,000 birds, 174 species

What Happened

The second edition of the Puducherry Bird Atlas has been released, recording 33,000 individual birds across 174 species in the Union Territory of Puducherry, using a systematic citizen-science methodology.
The atlas provides a baseline and comparative dataset for tracking changes in bird populations and distributions in the Puducherry region over time, building on the data gathered in the first edition.
Citizen science volunteers — trained birdwatchers using standardised survey protocols — contributed to the data collection, reflecting a growing trend in community-based biodiversity monitoring in India.
The atlas covers both resident and migratory bird species found across Puducherry's diverse habitats: coastal, agricultural, urban, and wetland ecosystems.
The findings will inform local conservation planning, land-use decisions, and help identify critical bird habitats requiring protection in one of India's smallest but ecologically significant Union Territories.

Static Topic Bridges

Bird Atlases and Citizen Science in Biodiversity Monitoring

A bird atlas is a systematic survey documenting the distribution and abundance of bird species across a defined geographic area, repeated over time to detect changes in populations, ranges, and habitat use. Atlases rely on standardised protocols so that data from different observers and time periods can be compared.

Survey methodology typically involves dividing the study area into a grid; volunteer birdwatchers cover assigned grid cells and record all species and individuals seen within a defined time and effort
eBird: Online platform (run by Cornell Lab of Ornithology) is the world's largest biodiversity database for birds; most Indian bird atlases upload data to eBird for global accessibility
State of India's Birds (SoIB) report: India's first comprehensive avian monitoring framework; SoIB 2023 assessed 942 species; found long-term decline in 60% of species with sufficient data
Kerala Bird Atlas (KBA, 2015–20): Asia's largest bird atlas project; covered 24,000+ km² using ~1,000 volunteers; documented 361 species
Citizen science (also called community science): structured participation of non-professional observers in scientific data collection; quality-controlled through training, checklists, and peer review

Connection to this news: The Puducherry Bird Atlas follows the same citizen science methodology used in larger Indian atlases, contributing to a growing national network of standardised biodiversity data useful for long-term conservation tracking.

Puducherry — Ecology and Biodiversity Context

Puducherry (officially Pondicherry) is a Union Territory on India's southeastern coast with four non-contiguous districts: Puducherry, Karaikal (Tamil Nadu enclave), Mahé (Kerala enclave), and Yanam (Andhra Pradesh enclave). Despite its small size (~479 km²), it contains a mix of coastal, urban, agricultural, and backwater habitats that support significant bird diversity.

Puducherry's coastline borders the Bay of Bengal; it lies within the East Coast biogeographic zone
Key habitats: Ousteri Lake (a freshwater lake and bird sanctuary, ~384 ha — the only bird sanctuary in Puducherry), Chunnambar backwaters, mangrove patches, paddy fields, urban green corridors
Ousteri Lake (Ousteri Wetland): Declared a bird sanctuary; an Important Bird Area (IBA) identified by BirdLife International; hosts a large number of resident and migratory waterbirds
Migratory birds: Puducherry, being on the East Asian–Australasian Flyway and the Central Asian Flyway overlap zone, receives a range of Palaearctic migratory species during October–March
Puducherry lies within the Eastern Ghats and Coromandel Coast biogeographic region

Connection to this news: The second edition's 174 species count — across a Union Territory of under 500 km² — underscores Puducherry's ecological significance as a migratory staging ground and resident habitat, making systematic monitoring particularly valuable for conservation prioritisation.

Migratory Birds and India's Flyway Obligations

India lies along two major migratory flyways — the Central Asian Flyway and the East Asian–Australasian Flyway — and is a signatory to the Convention on Migratory Species (CMS) and several related agreements. Migratory birds connect Indian habitats to ecosystems across Asia, Africa, and Australia, making conservation a shared international responsibility.

Central Asian Flyway (CAF): Covers 30 countries from the Arctic/Siberia to the Indian subcontinent; India is a key wintering ground
India hosts approximately 1,350+ bird species (~13% of the world's bird species); 29 are critically endangered
CMS (Convention on Migratory Species): Also called the Bonn Convention; India is a party; governs protection of migratory animals and their habitats
Ramsar Convention: International treaty for wetland conservation; India has 85 Ramsar sites (as of 2025) — the largest number in Asia; wetland protection directly supports migratory waterbirds
Important Bird Areas (IBAs): Designated by BirdLife International; India has 500+ IBAs; provides a non-statutory but globally recognised basis for prioritising conservation action
National Action Plan for Migratory Birds: India developed this under the Environment Ministry to implement CMS obligations

Connection to this news: Regular bird atlases like Puducherry's feed directly into IBA assessments and national/international monitoring frameworks; the 174-species record helps determine whether Ousteri and other Puducherry habitats retain their IBA status.

Biodiversity Monitoring and Conservation Policy in India

India's biodiversity monitoring is governed by the Biological Diversity Act (2002), implemented by the National Biodiversity Authority (NBA). Regular species surveys inform State Biodiversity Strategies and Action Plans (SBSAPs) and local Biodiversity Management Committees (BMCs).

Biological Diversity Act (2002): Establishes three-tier structure: NBA (national) → State Biodiversity Boards (SBBs) → BMCs (local); regulates access and benefit-sharing of biological resources
National Biodiversity Action Plan (NBAP): India's commitment under the UN Convention on Biological Diversity (CBD); updated targets aligned with the Kunming-Montreal Global Biodiversity Framework (2022) — "30x30 target": protect 30% of land and 30% of oceans by 2030
Zoological Survey of India (ZSI): Publishes annual records including "Animals of India" series; maintains species databases
Bombay Natural History Society (BNHS): India's oldest and most prominent bird conservation organisation; coordinates bird ring-recovery programmes and IBA assessments
eBird India and India Biodiversity Portal: Citizen science platforms aggregating species observations nationwide

Connection to this news: Local atlases like Puducherry's are essential inputs to the BMC and State Biodiversity Board data systems, enabling evidence-based conservation decisions at the micro-regional level.

Key Facts & Data

Puducherry Bird Atlas 2nd edition: 33,000 individual birds recorded; 174 species documented
Puducherry area: ~479 km² (4 non-contiguous districts)
Ousteri Lake Bird Sanctuary: ~384 ha; Puducherry's only bird sanctuary; designated Important Bird Area (IBA) by BirdLife International
State of India's Birds (SoIB) 2023: 942 species assessed; long-term decline in ~60% of assessed species
India's total bird species: ~1,350+ (~13% of global bird species)
India's Ramsar sites: 85 (as of 2025) — highest in Asia
India's IBAs: 500+ designated by BirdLife International
Kerala Bird Atlas (KBA, 2015–20): 361 species; ~1,000 volunteer observers — Asia's largest bird atlas
Convention on Migratory Species (CMS / Bonn Convention): India is a party; covers 30 countries on the Central Asian Flyway
Kunming-Montreal Global Biodiversity Framework (2022): "30x30" target — 30% of land and oceans protected by 2030; India is a signatory under CBD
Biological Diversity Act (2002): NBA → SBBs → BMCs three-tier structure for biodiversity governance