Survey highlights diversity of bird species
Synchronized Bird Survey 2025 in Tamil Nadu shows rich biodiversity: Tamil Nadu has once again proven its ecological richness through the Synchronized Bird Survey 2025, which recorded a striking 7.8 lakh wetland and terrestrial birds across the state. The count was spread over 798 unique species, offering a vibrant picture of the state’s avian life. This large-scale survey was carried out in two phases, covering both wetlands and terrestrial zones with an extensive team of observers and forest officials.
Findings from phase 1 and phase 2
In Phase 1, the focus was on wetland regions. A total of 397 bird species were observed with a massive count of 5,52,349 birds. Among them, 1,13,606 were migratory birds, showcasing the importance of Tamil Nadu as a temporary home for birds traveling long distances. Wetlands such as Vedanthangal Bird Sanctuary and Pulicat Lake played a major role in this phase.
Phase 2 shifted to terrestrial areas and brought to light 401 bird species with 2,32,519 birds recorded. Interestingly, the number of migratory birds was consistent in both phases, again 1,13,606 birds from 136 different species, underlining the state’s critical role in the migratory route known as the Central Asian Flyway.
Spotlight on endangered and nocturnal birds
The survey didn’t just focus on numbers but also highlighted the conservation value of Tamil Nadu. Out of 37 endangered bird species known to exist in the state, 26 were successfully documented in this survey. This is a significant finding because it helps conservation authorities to focus their efforts on preserving these rare species.
The study also listed 17 nocturnal bird species, many of which are usually hard to spot due to their elusive nature. Owls, nightjars, and other such birds were recorded, offering insights into the lesser-known aspects of Tamil Nadu’s avian ecosystem.
Importance for biodiversity mapping
These findings strengthen Tamil Nadu’s position as a key biodiversity hotspot in the country. It’s important to note that India ranks 8th in the world for bird species diversity, and Tamil Nadu’s rich wetlands and forest landscapes contribute significantly to this status. The data collected will aid in forming better policies for habitat protection, bird migration corridors, and environmental education.
Static Usthadian Current Affairs Table
| Topic | Details |
| Total birds recorded | 7.8 lakh |
| Total species recorded | 798 species |
| Phase 1 bird count | 5,52,349 |
| Phase 2 bird count | 2,32,519 |
| Migratory bird count | 1,13,606 (both phases) |
| Endangered species documented | 26 out of 37 in Tamil Nadu |
| Nocturnal bird species noted | 17 species |
| Total species in Phase 1 | 397 species |
| Total species in Phase 2 | 401 species |
| Migration route mentioned | Central Asian Flyway |
| Known bird sanctuaries | Vedanthangal, Pulicat Lake |
| Global bird diversity ranking | India ranks 8th globally |
