Hello Sir,
THere are different types of fencing
1. barbed wire,
2. Woven wire
3.electric fencing
4. highh tensile fencing
5. natural fencing
For natural fnecing you can grow lantana,some wild flowers or oriental grasses. You can also use wood but over a period of time you need to change them. Cut out shapes from aluminum foil and hang on the fence with wire; most birds shy away from shiny, moving objects.
Regards
Ashwini