Archive image from page 26 of The danger of introducing noxious. The danger of introducing noxious animals and birds dangerofintroduc00palmrich Year: 1894?] DANGER OF INTRODUCING NOXIOUS ANIMALS AND BIRDS. 99 foothold in twenty States, the District of Columbia, and two provinces in Canada. Between L870 and 1880 ii was estimated thai its range had been extended by nearly 16,000 square miles, and isolated colonies were established at San Francisco (1871-72) and Sail Lake City, Utah (is;:;). During the nexl five years ii spread over more than 500,000 square miles, and in 1886 had become establi
Archive image from page 26 of The danger of introducing noxious. The danger of introducing noxious animals and birds dangerofintroduc00palmrich Year: 1894?] DANGER OF INTRODUCING NOXIOUS ANIMALS AND BIRDS. 99 foothold in twenty States, the District of Columbia, and two provinces in Canada. Between L870 and 1880 ii was estimated thai its range had been extended by nearly 16,000 square miles, and isolated colonies were established at San Francisco (1871-72) and Sail Lake City, Utah (is;:;). During the nexl five years ii spread over more than 500,000 square miles, and in 1886 had become established in thirty-five States and five Territories, occupying practically all of the region easl of the Mississippi River (except portions of Florida, Alabama, and Mis- sissippi), as well as parts of eighl States in the West. Its range was estimated to cover 1,033,000 square miles, including square miles in Canada. Pig. 2.—Map showing spread of English sparrow in the United States: The entire shaded area represents approximately the present distribution of the sparrow: triangles indicate colonies in 1860: black spots, colonies in 1870; circles, isolated colonies in ;: dotted area, range in 1886: lined area, extension of range up to end of 1898. At the present time (1808) only three States (Montana, Nevada, and Wyoming) and three Territories (Alaska. Arizona, and New Mexico) are apparently free from the sparrow. Its range ex1 ends west ward 111 the Great Plains and in Colorado to the Rocky Mountains, and also occupies considerable areas in Utah and central California. (Sec fig 2. i The true character of the bird is now so well known that it is unnecessary to dwell on its injuries to fruit and grain, the nuisance it has become in large cities, and the extent to which it has replaced native birds. The ill-directed care and energy expended on introduc- ing and fostering it thirty years ago are largely responsible for the marvelous rapidity of its distribution. Now,
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