How many orders when the species is Pavo Cristatus?
CREATE TABLE "table1_1818471_1" (
  "year" real,
  "date" text,
  "type" text,
  "species" text,
  "author_species" text,
  "value" text,
  "afinsa" real,
  "scott" text,
  "mitchell" real,
  "yvert" text,
  "sta_gib" real,
  "order" text,
  "family" text
);
SELECT COUNT("order") FROM "table1_1818471_1" WHERE "species"='Pavo cristatus';