Evolution > control

This involves placing baits of different colours (the ‘worms’) in a place where birds are known to search for food. Uneaten ‘worms’ are collected (or counted) regularly and the ‘worm population’ is restored with more coloured bait in the same proportions as the bait that remains. After several cycles of predation and breeding, the proportions of each colour in the population will have changed – simulating directional