IRVINE, Calif.—An outbreak of avian botulism is being investigated by authorities after numerous birds were found suffering from the disease along the Aliso Creek urban stream corridor, which runs 19.8 miles through south Orange County. According to Debbie McGuire, executive director of the Wetlands and Wildlife Care Center in Huntington Beach, diseased animals have also been found at Eisenhower Park and Lake in the City of Orange, as well as Laguna Woods and Lake Mission Viejo. The Care Center is currently the point of care for the birds after they are found by other agencies or good Samaritans. Around Aug. 17, 15 deceased Mallard ducks were found by a cyclist riding along the Aliso Creek bike path, and another six ducks were found alongside the creek by a woman who tried to get help from a local animal hospital that unfortunately did not have a bird specialist. Although the Fish …