To the untrained observer, all teeny, dreary colored birds are “common sparrows.” The closer research of the educated eye immediately differentiates, and observes not merely the varied species, nevertheless furthermore find many other recognizable feathered friends where someone who “has vision and sees not” does not at all notice their existence. Additional facts and figures at Backyard Birds of North America on the subject of birds of Texas to to aid and teach the senses and train the eye.