CREATE TABLE table_15397 ("Date" CLOB, "Opponent" CLOB, "Site" CLOB, "Score" CLOB, "Loss" CLOB)

Who were they playing when Bird (1-4) had a loss?
SELECT "Opponent" FROM table_15397 WHERE "Loss" = 'bird (1-4)'
SELECT "Opponent" FROM "table_15397" WHERE "Loss" = 'bird (1-4)'