What date marks the official extinction of the Carolina parakeet species?

Answer

February 14, 1918, when the male named Incas died.

The very last known individual, a male named Incas, died on February 14, 1918, at the Cincinnati Zoo in Ohio, which is the official date the species blinked out of existence.

What date marks the official extinction of the Carolina parakeet species?
speciesbirdextinctioncharacteristicParakeet