. The American natural history : a foundation of useful knowledge of the higher animals of North America. onto the City of Mexico, and including southern California. 5. The region of great rainfall, on the northwestern Pacificcoast (northern California, Oregon and Washington). It is not strange, therefore, that we find typical species ofeastern animals developing westward into different colors,and also different pelage, and designated scientifically bydifferent names. Take these examples by way of illustra-tion: In the East we have the Common Bluebird. In the Rockies we have the Chestnut-Backe
. The American natural history : a foundation of useful knowledge of the higher animals of North America. onto the City of Mexico, and including southern California. 5. The region of great rainfall, on the northwestern Pacificcoast (northern California, Oregon and Washington). It is not strange, therefore, that we find typical species ofeastern animals developing westward into different colors,and also different pelage, and designated scientifically bydifferent names. Take these examples by way of illustra-tion: In the East we have the Common Bluebird. In the Rockies we have the Chestnut-Backed Bluebird, andalso the Mountain Bluebird. In Arizona we have the Azure Bluebird. In the Pacific states we have the Western Bluebird. And in Lower California the San Pedro Bluebird. Is it at all necessary tliat the general reader should know 1 Si-ali-a si-alis. Length, inches. ^66 PERCHERS AND SINGERS about all these different species in order to not be accountedignorant? Let us see. Any sensible civilized person knows a cow at sight, alsosomething of its place in Nature, and its habits. No BLUEBIRD. however, save the special student of domestic cattle, is ex-pected to be able to say, without looking it up, whethera particular cow is an Alderney, a Jersey, a Short-Horn, aHereford, or a Durham. The case of the Bluebird is quite similar. He who knowsone Bluebird well may justly claim a bowing acquaintancewith all the others, and feel at home when in their company. Here in the East the Bluebird is a thing of beauty, and a BLUEBIRDS NOT GOOD FIGHTERS 267 joy until the abominable English sparrows drive it away. Itcomes with the robin, to help chase winter away; and, thoughwe have heard it a hundred times, it is always welcome news,late in February or early in March, to hear some one say
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