Recreational activity which consist to observe birds in their natural environement
This activity can be done with naked eye, through a device like binoculars and telescopes, or by listening for bird sounds (live or recorded with a device).
The birdwatching activity can have different goals:
- study and counting birds as an ornithologist
- watching bird in their natural environment but without scientific purpose
There are more detailed type of definition and detailed history on Wikipedia.