. Darwinism; an exposition of the theory of natural selection, with some of its applications. Natural selection; Evolution. Cursorius chalcopterus. C. gallicus. FIG. 21.—Secondary quills. those of the mammalia, already described, that we cannot doubt they serve a similar Those birds which are inhabitants of tropical forests, and which need recognition marks that shall be at all times visible among the dense foliage, and not solely or chiefly during flight, have usually small but brilliant patches of colour 1 The principle of colouring for recognition was; I believe, lirst stated in m
. Darwinism; an exposition of the theory of natural selection, with some of its applications. Natural selection; Evolution. Cursorius chalcopterus. C. gallicus. FIG. 21.—Secondary quills. those of the mammalia, already described, that we cannot doubt they serve a similar Those birds which are inhabitants of tropical forests, and which need recognition marks that shall be at all times visible among the dense foliage, and not solely or chiefly during flight, have usually small but brilliant patches of colour 1 The principle of colouring for recognition was; I believe, lirst stated in my article on " The Colours of Animals and Plants " in Macmillan's M<nj<i:.iii<', and more fully in my volume on Tropical Nature. Subsequently Mrs. l!:irli<T gave a few examples under the head of " Indicative or Banner Colours," but she applied it to the distinctive colours of the malrs of birds, which I explain on another principle, though this may Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wallace, Alfred Russel, 1823-1913. London and New York, Macmillan and co.
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