John Henry Gurney Jr.

Summary

John Henry Gurney Jr. On the Misdeeds of the House-Sparrow (1887)

No one has ever answered the late Colonel Russell's query:—"Why is it that in fields far away from farm-premises, where there are no Sparrows, insects do not increase and multiply?" And why have not insects multiplied at Colonel Russell's place in Essex, where, for many years, Sparrows were rigorously kept down, in fact almost exterminated? The reason must be that the caterpillars are eaten by other small birds, such as Chaffinches, Greenfinches, and Yellow-Hammers, and by a host of Warblers and other birds which visit this country for the summer, when insect-life in all its stages is rampant.
Source: Wikisource

John Henry Gurney Jr. On the Misdeeds of the House-Sparrow (1887)

Let no one suppose that, if we spare our Sparrows, Nature will allow us to have an addition of Greenfinches and Chaffinches plus those Sparrows: there is no likelihood that such a thing would happen, for it is contrary to the experience of every practical ornithologist. The land will not support an indefinite number of individuals, and if the Sparrow increases, other birds go to the wall—partly because they drive them away from gardens where they used to nest, but principally because they eat their food.
Source: Wikisource

John Henry Gurney Jr. On the Misdeeds of the House-Sparrow (1887)

The best time to shoot Sparrows for dissection is between 3 and 5 in the afternoon. The crop will give a far better idea of the day's meal than the gizzard. A magnifying-glass is often a great help in making out dubious substances: the late Col. Russell considered that with a watchmaker's lens the most delicate insect might be detected in the crop of a Sparrow, and no one ever took greater pains to master the Sparrow-question thoroughly than he did, or knew more about it.
Source: Wikisource

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