deaths

Martha, last known passenger pigeon (h. 1885)

Historical image related to Martha, last known passenger pigeon (h. 1885) from September 1, 1914

Martha (passenger pigeon)

Last known passenger pigeon

Martha was a passenger pigeon, the last known of her species; she was named "Martha" in honor of Martha Washington, the first lady of the United States from 1789 to 1797.
Source: Wikipedia (CC BY-SA)

Endling

Last known individual of a species or subspecies

An endling is the last known individual of a species or subspecies. Once the endling dies, the species becomes extinct. The word was coined in correspondence in the scientific journal Nature.
Source: Wikipedia (CC BY-SA)

Passenger pigeon

Extinct migratory pigeon previously endemic to North America

The passenger pigeon or wild pigeon is an extinct species of pigeon that was endemic to North America. Its common name is derived from the French word passager, meaning "passing by", due to the migratory habits of the species. The scientific name also refers to its migratory…
Source: Wikipedia (CC BY-SA)

September 1

Day of the year

September 1 is the 244th day of the year in the Gregorian calendar; 121 days remain until the end of the year.
Source: Wikipedia (CC BY-SA)