BBC FOUR are showing a number of programmes next week that might be worth watching :- MONDAY 1st Nov 9pm-10pm " Twitchers - A Very British Obsession " . 10pm -10.50pm "Natural World - The Cuckoo" and 10.50 -12.10 " Why Birds Sing " . At 9pm on WEDNESDAY 3rd Nov " Birds Britannia " , a new 4 part series starts . Let's hope that they live up to my expectations !