This Saturday, March 14th, is Pi Day! This year Pi Day has an extra significance on 3/14/15 at 9:26:53 a.m. and p.m., with the date and time representing the first 10 digits of the digit π. This only happens every one hundred years, so celebrate this very special Pi Day in style with this cute coloring page from Birdorable. A Black-billed Magpie (or Eurasian Magpie, it's your pick) is sitting on a large π symbol. It's your job to color the bird and Pi however you like, but if you want some hints you can have a look at the profile pages for each bird. If you can't get enough you can find dozens of other Birdorable coloring and activity pages in our Downloads section. Have fun and enjoy 3/14/15!