Avian influenza.

(euphemistic, idiomatic) (Informal education about) sex.

Used other than figuratively or idiomatically: see wading, bird.

A large terrestrial bird of prey, Sagittarius serpentarius, native to Africa with very long legs that preys on reptiles, especially snakes.

(slang, US, idiomatic) A police helicopter, specifically in the context of patrolling or searching impoverished, high-crime urban areas (the ghetto).

A passerine.

Any of several species of birds in the family Viduidae, incorporating whydahs and widow finches.

Any of various passerine birds of the family Paradisaeidae native to Oceania. In many of the species the breeding plumage of the males is brightly coloured.

A dog, especially a pointer, used in shooting to retrieve the dead birds. / A tout. / A person who seeks out real estate investment opportunities in exchange for a fee.

(intransitive) To watch closely. / (transitive) To seek out. / (aviation, military, slang) A multiservice tactical brevity code requesting configuration of sensors.