Observing or identifying wild birds in their natural environment. / (slang) The hobby of watching rocket launches.

(birdwatching) A person who observes or identifies wild birds in their natural environment. / (slang) A person who enjoys watching rocket launches.

plural of birdwatcher

Third-person singular simple present indicative form of birdwatch

(intransitive) To take part in birdwatching; to observe and identify birds.

A session of observing and identifying birds.

simple past tense and past participle of birdwatch