i,m a bit upset, after walking in my local woods for about 40yrs without worry, on monday , i was startled by a man or teenager hiding behind bushes and whistling then ducking back when i looked round, i left the wood and called my friend on my mobile, and saw him hurrying out further along the wood. i,m usually oblivious when i,m birdwatching now i,m checking around me all the time.. my innocent pleasure spoiled.