In that case, if you lay outdoors with your mouth open, how long does it take until a bird ... in it? Depending on the worldwide bird density and the relative s

In that case, if you lay outdoors with your mouth open, how long does it take until a bird ... in it? Depending on the worldwide bird density and the relative size of the mouth: https://what-if.xkcd.com/11/ https://what-if.xkcd.com/11/