News: Rajasthan government has decided to build temporary shelters for migratory birds near the Sambhar Lake (near Jaipur) before 2020’s winter season.
- Sambhar Lake: It is India’s largest inland saline water body located near Jaipur in Rajasthan.
- The lake is surrounded on all sides by the Aravali hills and is spread across Jaipur and Nagaur districts and also a part of Ajmer district in Rajasthan.
- The lake receives water from five rivers Medtha, Samaod, Mantha, Rupangarh, Khari and Khandela.
- Significance: The lake was also designated as a Ramsar site in 1990.It is also famous for salt production and is also an Important Bird Area(IBA).
- Why there is a need for shelters: Every year, a large number of birds from the cold northern regions of Central Asia come to Sambhar Lake.In 2019, more than 20,000 migratory birds died due to avian botulism in the lake.
- Avian Botulism: It is a neuro-muscular illness caused by Botulinum (natural toxin) that is produced by bacteria, Clostridium botulinum.
- The bacteria is commonly found in the soil, rivers, and seawater.It affects both humans and animals.
- The bacteria also need anaerobic (absence of oxygen) conditions and do not grow in acidic conditions.
- The illness affects the nervous system of birds, leading to paralysis in their legs and wings.