text: Another theory suggests that alarm signals function to attract further predators, which fight over the prey organism, giving it a better chance of escape. Others still suggest they are a deterrent to predators, communicating the preys alertness to the predator. One such case is the western swamphen (Porphyrio porphyrio'), which gives conspicuous visual tail flicks (see also aposematism, handicap principle and stotting).