Oussudu or Ousteri Bird Sanctuary is the first and the only wildlife sanctuary in the Indian union territory of Puducherry.
[3] About 40 species of migratory birds visit the sanctuary after November everyear including golden oriole, openbill stork, tailor bird, painted stork, white ibis, white-breasted water-hen and spotted owlets.
[1] The vegetation ranges from small herbs to trees, which supports migratory avifauna as well as native birds during summer and winter.
[4] However, bird poaching poses a significant threat to the sanctuary.
[5] In 2022, the Wildlife Department in Puducherry seized 57 bird carcasses, which had been poisoned and killed by poachers.