A newborn humpback calf that strand on a beach in Sydney overnight dies despite rescue efforts, and its carcass is now set to be tested for H5N1 bird flu. Multiple reports say the calf was found stranded and that responders attempted to assist it, but it died on Friday morning. Authorities plan to collect tissue samples from the carcass for laboratory testing to determine whether the whale is linked to the H5N1 virus. One outlet also notes the broader context of growing H5N1 cases, referencing a rise in the number of reported cases to 17, while other reports focus on the individual stranding and the decision to test the animal. The reports are consistent that the animal is a newborn humpback whale, the stranding occurred overnight on a Sydney beach, and the death occurred before or on Friday morning. The testing is intended to inform public health and wildlife monitoring efforts regarding possible transmission of the virus to marine mammals.