This story was originally posted on MyNorthwest.com
The Seattle Aquarium is mourning the loss of an adored pigeon.
PG, an elderly pigeon guillemot, was nearly 40 years old when her care team made the hard decision to euthanize her due to worsening arthritis in her knees, according to a Facebook post from the Seattle Aquarium.
PG the pigeon arrives at Seattle Aquarium in 1986
PG came to the aquarium from a rehabilitation center a few months after she was born in 1986 after wildlife officials determined she could not live in the wild…