Rap looked at the Pigeon for some time. "It isn't an easy bird to describe--all the colors run together so. It has bluish-gray upper parts, and underneath it is a sort of pinky brown with white under the tail. The sides of the neck are shiny with soap-bubble colors. The outside tail-feathers are bluish and fade off white at the tips, but the middle ones are all dark; the beak is black, and the feet are red. But see here," he added, as he looked sharply at the bird's tail again, "there are some chestnut and black spots at the roots of the side feathers." "Very good, my boy. How long do you think it is?" Rap measured with his finger and said he thought about fourteen inches. "You are almost right, though these Pigeons vary in length, because some have longer tails than others. I think this one measured about sixteen inches when it was stretched out straight; but it looks shorter now, because it is set up in a natural position. "The life history of this beautiful Pigeon should teach every one the necessity of protecting birds by law. Up to fifty years ago the Passenger Pigeon was extremely plentiful everywhere east of the great plains--there were many millions in a single flock sometimes. It was a most valuable bird, its flesh being particularly well-flavored and tender. It nested in large colonies that often stretched unbroken for many miles in the woods, and was both hardy and prolific. If it had been protected in the breeding season and hunted fairly as an article of food at other times, we should still be enjoying Pigeon pie as freely as we did in my boyhood. But as the population of the country increased, these great flocks were cruelly slaughtered, for the mere greed of killing them; thousands were often left to decay upon the ground, and now I do not believe that any one of you has ever seen a wild Pigeon before to-day." "We have Pigeon pie at home in the winter," said Dodo. "Yes, tame Pigeon pie," said the Doctor. "It might have been tame pie and it was very good! But, Uncle Roy, why did people want to kill these good, food birds when they didn't care to eat them?" "It is difficult to say exactly, little girl. People living in what we call a state of nature, like African savages, or as our American Indians once did, seem to follow Heart of Nature's law; 'Kill _only_ what ye need for food.' But many people that are called civilized never think of natural law at all, and having a coarse streak in their natures desire to kill wild things merely for the sake of killing. It is against such people that laws must be made by those who have more intelligence. [Illustration: Mourning Dove] "Now for your Dove, Nat--called the Mourning Dove from his mournful 'coo-o-coo-o!''