ancestor angry clouds announcer antecedent avant-garde avifauna baby bird bellwether bird bird of Jove bird of Juno bird of Minerva bird of night bird of passage bird of prey birdie birdlife birdy black cat black clouds broken mirror buccinator bushwhacker cage bird chick cygnet danger sign diving bird dove eagle eaglet early symptom explorer falling barometer fish-eating bird fledgling flightless bird forebear foregoer forerunner fowl front runner frontiersman fruit-eating bird fugleman fulmar game bird gathering clouds groundbreaker guide halcyon bird harbinger herald high sign innovator insect-eating bird lead runner leader messenger migrant migratory bird nestling omen oscine bird owl passerine bird pathfinder peacock peafowl peahen perching bird pigeon pioneer point precedent precursor predecessor preliminary sign premonitory sign premonitory symptom prodroma prodrome quarantine flag rainbow ratite raven red flag red light scout sea bird seed-eating bird shooting star shore bird skull and crossbones songbird squab storm clouds storm petrel swan symptom thundercloud thunderhead trailblazer trailbreaker vanguard vaunt-courier voortrekker wading bird warbler warning sign warning signal water bird waterfowl wildfowl yellow flag yellow jack