birdwatching

noun3

1. •
   Observing or identifying wild birds in their natural environment.
2. •
   (slang) Girlwatching
3. •
   (slang) The hobby of watching rocket launches.

   • In fact, on this night, the birdwatching is over for everyone, for the firing is cancelled. Nobody notifies birdwatchers officially, of course, so the exodus is scattered and gradual. — 1957