Context: India’s tiger census of 2018 has set a Guinness record for being the world’s largest camera trap wildlife survey.

All India Tiger Estimation 2018:

  • The fourth cycle of the All India Tiger Estimation 2018 had counted 2,967 tigers, which is about 75% of the global tiger population.
  • The data is said to be the most comprehensive to date, in terms of both resource and data amassed.
  • For the estimation exercise camera traps (outdoor photographic devices fitted with motion sensors that start recording when an animal passes by) were placed in 26,838 locations across 141 different sites and surveyed an effective area of 1,21,337
  • Of the total photographs captured of wildlife 76,651 of them were that of tigers and 51,777 of leopards; the remainder were other native fauna.

From the photographs obtained, 2,461 individual tigers (excluding cubs) were identified using stripe­ pattern­ recognition software.