It's Friday! Which means it is time for this weeks five facts for Friday. Here we go...Did you know... There are between one and two billion living birds on the planet.Did you know... The feathers of a bird weigh more than its skeleton.Did you know... Peregrines hunt from above and drop steeply at a record 200 miles an hour.Did you know... Young snowy owls, especially males, become whiter as they age. Females are darker than males, and never totally white.Did you know... The Common House Sparrow can swim to escape predators, although it is not a water bird.