"The Blue Pigeon, or Rock Dove of India" says Jerdon, "differs from that of Europe only in having an ash-coloured instead of pure white rump. It is one of the most common and abundant birds, congregating throughout the country in large flocks, and breeding wherever they can find suitable spots. They are most partial to large buildings, such as churches, pagodas, mosques, tombs, and the like, frequently entering verandahs of inhabited houses and building in the cornices. Hollows in walls of cities or towns are favourite places, and in some parts of the country they prefer holes in wells. In default of such spots they will breed in crevices and cavities of rocks, caverns, and sea-side cliffs, and are particularly partial to rocky waterfalls. The celebrated falls of Gaissoppa are tenanted by thousands of Blue Pigeons. These Pigeons are held in respect by most Hindoos, and almost venerated by some, insomuch that if a pair build in the house of a native he considers it a favourable omen." * * * * * The CUCKOO PIGEONS (_Macropygiæ_) constitute a group distinguishable by the slender formation of their bodies, their small heads, long tails, and short wings and feet. These birds are all eminently social in their habits, and frequently keep together in large flocks. All subsist principally upon fruit and seeds, and, in order to obtain these, constantly occupy woods and forests, from whence they occasionally venture forth to seek for food in well-planted gardens and orchards. [Illustration: THE PASSENGER PIGEON (_Ectopistes migratorius_).] THE PASSENGER PIGEON, OR CAROLINA TURTLE-DOVE.