India, Aug. 4 -- Jackie, the beloved bald eagle followed by millions through the Friends of Big Bear Valley (FOBBV) nest camera, has suffered a medical setback while receiving treatment for a serious illness. Her doctors said Monday that new blood tests showed her anemia had worsened.

The Ojai Raptor Center, where Jackie is being treated, said her packed cell volume (PCV) has dropped to 13%. The rehabilitation center said veterinarians immediately began additional advanced diagnostic testing to determine the cause of the worsening condition.

The thousands of people who frequently watch Jackie and her lifelong partner, Shadow, on the Big Bear Eagle live cam have grown concerned about Jackie's health.

According to the Ojai Raptor Center,...