Taiji

/ Yes, a large birdhouse would be needed then. But in general, I was thinking about the size and I'm leaning towards them being the size of a tarantula or a rat, and as annoying as Alex's raven. This explains both the fact that there need to be many spiders (20 of them), and the fact that this task should, in theory, be normally calculated for some warriors (fighting spiders of a smaller size would simply be stupid). /