You know, you really don't need to remove it as long as their butt isn't actually plugged up with it. As long as they can still squeeze out their poop, it's not doing them any harm to have slightly poopy butts. Ripping out fluff though could really injure them. If any of mine have poopy fluff, I pick them up and look closely. As long as their actual vent is clear, I don't bother trying to remove it. If you're not sure, blow gently at their butts and you shoudl see their little vents puckering in and out.
Oh man, I can't believe I just typed that. 'Now blow on your chicken's butt....'
Oh man, I can't believe I just typed that. 'Now blow on your chicken's butt....'
