Jackie, the bald eagle who became an internet sensation and a symbol of the species' recovery in California, died Monday after being treated for an illness at a veterinary facility, her caretakers announced. The bird had gained a large following through live-streamed videos of her romance with her mate, which drew viewers who watched her nest and raise young. Her caretakers said she had been ill and was undergoing treatment, but did not disclose the exact nature of the illness or her age. As news of her death spread, fans began commemorating her with a slew of memorial T-shirts on Etsy, which have been selling quickly. Jackie was widely recognized as a symbol of the bald eagle's comeback in California, a population that had once been endangered. Her story resonated with thousands of people who followed her life online, and her death has prompted an outpouring of tributes. The veterinary facility where she was treated has not released further details, and an investigation into the illness has not been announced. Her caretakers confirmed that she passed away on Monday, ending a life that had become a touchstone for wildlife lovers and a testament to the species' recovery in the state.