Bird flu has been found on mainland Antarctica for the first time, the Spanish government announced on Sunday, as scientists expressed concern about the possibility of an “ecological disaster.” The first 2 confirmed cases were found in samples taken from dead skuas near Primavera, a based owned by Argentina on the Antarctic Peninsula. The tests were later carried out by Spanish scientists. “Analysis has conclusively shown that the birds were infected with the H5 subtype of avian influenza and at least one of the dead birds had the highly pathogenic virus,” Spain’s Ministry of Science said in a…