Saltire detected the symbol, which often appears with balls in the quadrants formed by the arms of the chi-cross, in standards that appear on the coins of Persepolis. She suggested that early Christians endorsed its solar symbolism as appropriate to Christ. She also wrote: "although it cannot be proved, ... in the white saltire of St. Andrew we still have a reminiscence of the old standard of the Persepolitan kingdom". In the old European Union standard, a black saltire set in an orange square is the hazard symbol for irritants (Xi) or harmful chemicals (Xn). It indicates a hazard less severe
Black-and-yellow phainoptila Black-and-yellow phainoptila The black-and-yellow phainoptila or black-and-yellow silky-flycatcher ("Phainoptila melanoxantha") is a species of bird in the family Ptiliogonatidae. It is monotypic within the genus Phainoptila. It is found in Costa Rica and Panama. The black-and-yellow phainoptila is a small, rotund bird with distinctive yellow flanks. Males have a black back, head and tail, yellow flanks and rump, olive breasts and grey bellies. Females have a black cap, olive breast, rump, wings and tail, yellow flanks, and grey throat, nape, and belly. The young are similar to adult females, but are duller and with no grey on nape and dusky