The practice of predicting the future, revealing hidden truths, or obtaining guidance in future affairs on the basis of the observation and…

Augury, divination; prediction or presage of the future; an instance of any of these; (also) a portent, an omen.

= ornithomancy, n.

An observation of birds for the purpose of obtaining omens; a sign or token given by birds.

The drawing of omens from birds.

= alectryomancy, n.

Divination by means of the flight and cries of birds; augury.

Divination using a cock, typically by interpreting patterns in its pecking at grains of corn. Cf. alectromancy, n.

Modifying agent nouns and nouns of action, designating a person who divines by means of the flights and calls of birds, or designating divination by…

The observation of birds for the purpose of divination.

= orniscopy, n.

Observation of birds for the purpose of divination; augury.

The observation of birds for the purposes of divination.