On April 9, the International Union for Conservation of Nature declared the emperor penguin to be an endangered species.
| Photo Credit: KSL
A sentinel species is a species whose members’ well being indicators the situation of the ecosystem wherein they dwell.
Scientists monitor them as a result of they are among the many first to reply to stressors of their setting, resembling air pollution and illness, and their response additionally tends to be extra obvious than most different species. In different phrases, they’ll present early warnings of ecosystem decline.
Published – April 12, 2026 03:17 pm IST
