INTERDEPENDENCE. “The house sparrow, Passer domesticus is unique among wild birds in its close association with virtual dependence on man, not only in the agricultural environment, where presumably this association first evolved, but also in built-up areas. It would be expected that, with man’s dominance of the world, the future would be a bright for house sparrows, but it is now becoming an evident that this is not the case, particularly in the urban and sub-urban areas.”
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