Every once in a while, you come across an article in the news that makes you check the date, to see if it is, in fact, April 1st.
One such article in the BBC covers the use of pigeons to deliver explosives and biological weapons on suicide missions. "A thousand pigeons each with a two ounce explosive capsule, landed at intervals on a specific target, might be a seriously inconvenient suprise", they quote. The plan was abandoned, however, after "MI5 branded Rayner [a pigeon enthusiast advocating the project] a 'menace in pigeon affairs'" and scrapped development of a 400-pigeon aviary.
You just can't make this stuff up.