Both sexes secrete in their crops milk or curd with which they feed their young, until they are nearly ready to fly, when they stuff them with mast and such other raw material as they themselves eat, until their crops exceed their bodies in size, giving to them an appearance of two birds with one head. Within two days after the stuffing they become a mass of fat--"a squab." At this period the parent bird drives them from the nests to take care of themselves, while they fly off within a day or two, sometimes hundreds of miles, and again nest. It has been well established that these birds look after and take care of all orphan squabs whose parents have been killed or are missing. These birds are long-lived, having been known to live twenty-five years caged. When food is abundant they nest each month in the year. Their principal food is the mast of the forest, except when curd is being secreted in their crops, at which time they denude the country of snails and worms for miles around the nesting grounds. Because they nest in such immense bodies, they are frequently compelled to fly from fifty to one hundred miles for food. During my early life I learned that these birds in spring and fall were seen in their migrations from the Atlantic to the Mississippi River. This knowledge, together with my personal observation of their countless numbers, led me to believe they were almost as inexhaustible as the great ocean itself. Of course I had witnessed the passing away of the deer, buffalo, and elk, but I looked upon them as local in their habits, while these birds spanned the continent, frequently nesting beyond the reach of cruel man. Between 1840 and 1880 I visited in the States of Ohio, Indiana, and Michigan many brooding places that were from twenty to thirty miles long and from three to four miles wide, every tree in its limits being spotted with nests. Yet, notwithstanding their countless numbers, great endurance, and long life, they have almost entirely disappeared from our forests. We strain our eyes in spring and autumn in vain to catch a glimpse of these pilgrims. White men tell us they have moved in a body to the Rocky Mountain region, where they are as plenty as they were here, but when we ask red men, who are familiar with the mountain country, about them, they shake their heads in disbelief. A pigeon nesting was always a great source of revenue to our people. Whole tribes would wigwam in the brooding places. They seldom killed the old birds, but made great preparation to secure their young, out of which the squaws made squab butter and smoked and dried them by thousands for future use. Yet, under our manner of securing them, they continued to increase.