Over 16.56 Lakh Birds Observed in Odisha Wetlands During Winter Census 2024

A recent bird census in Odisha's wetlands revealed sightings of over 16.56 lakh birds from more than 200 species, officials reported. The survey spanned Chilika Lake, Bhitarkanika National Park, and Hirakud Reservoir. Conducted on a Saturday, the census involved over 200 participants, including forest staff, ornithologists, researchers, and trained volunteers.

Bird Census Methodology and Findings

Teams used spotting scopes, binoculars, and data sheets for accurate bird identification and counting. In Chilika Lake alone, 11,27,228 birds were recorded. Nalabana, a notable avian habitat within the lagoon, hosted 3,43,226 birds. Of these, 10,87,226 were migratory birds from 109 species, while 40,002 were resident birds from 87 species.

The previous year's count was slightly higher at 11,37,759 birds across 187 species. "This year, there is a decrease of 10,531 winged guests in total," an official noted. The Gadwall species topped the list with 2,01,926 birds visiting Chilika Lake. Northern Pintail and Eurasia Wigeon followed with counts of 1,93,394 and 1,54,937 respectively.

Species Diversity and Environmental Factors

Interestingly, the number of bird species increased to 196 this year from last year's 187. "The marginal decrease in bird population is probably due to high water level in the lake," an official explained. This condition reduces mudflat availability for wader birds.

Bhitarkanika National Park saw a slight rise in bird numbers this winter. The count reached 1,51,614 compared to last year's 1,51,421. However, the number of species decreased from 121 to 118. Lesser Whistling Duck was the most sighted with 44,825 individuals.

Highlights from Hirakud Reservoir

Hirakud Reservoir in Sambalpur district recorded an increase in bird numbers with 3,77,732 birds from 122 species observed this year. Last year’s count was around 3.42 lakh winged guests. A wildlife staff member remarked on the vibrant ecosystem created by these feathered visitors.

A significant observation was made at gypsum pond areas near Paradip Port Township where many migrant birds were spotted. Rajnagar Mangrove Forest Division Assistant Conservator of Forest Manas Das highlighted this as a major highlight of the census.

Odisha's wetlands continue to attract winter migrants from northern regions and cooler places like Ladakh due to their unique ecosystems and serene environments. These conditions make them ideal for winter habitation for avian creatures seeking refuge from harsher climates elsewhere.