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Delhi Bird Atlas Records 221 Species in First Year, Maps Avian Diversity Across Urban Ecosystems

Updated: July 20, 2025 07:52

Image Source: Deccan Herald
The Delhi Bird Atlas, a citizen-led initiative supported by the Forest Department, has completed its first year of avian mapping, documenting 221 bird species across wetlands, ridge forests, urban villages, and high-rise colonies. The project aims to build a long-term understanding of bird distribution and seasonal patterns in the national capital.
 
Key Highlights:
 
  • A total of 122,814 birds were recorded through 1,156 checklists submitted on the eBird portal.
  • The survey identified 126 resident species, 14 summer migrants, and 81 winter migrants.
  • Birding was conducted in January and again in May–June 2025, covering 145 subcells across 10 percent of Delhi’s geographical area.
 
Survey Methodology:
 
  • Delhi was divided into grids of 6.6 sq km, further split into quadrants and subcells of 1.1 sq km.
  • Each site was surveyed multiple times to ensure data reliability, with 195 participants including team leads and cluster heads.
  • Seasonal comparisons revealed species-specific patterns, such as the Indian paradise flycatcher seen only in winter and oriental turtle-dove appearing in summer.
 
Strategic Context:
 
  • The Atlas provides critical data for urban planning, biodiversity conservation, and ecological research.
  • Observations are being analyzed to understand habitat preferences and migratory behaviors.
  • A comprehensive report is expected by October 2025, with the second year of surveys likely to begin in November.
 
Sources: Hindustan Times, ThePrint, Devdiscourse, Times of India, Manorama Online (July 2025)

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