Publisher's Synopsis
Excerpt from Suggestions for Combating Objectionable Roosts of Birds With Special Reference to Those of Starlings
Such movements, brought about by factors beyond human control, make the roost not a stable assemblage of a certain number of permanent occupants, but rather a fluctuating aggregation of individuals that may come and go. The numbers may be increased over night by an influx from the outside or the roost may be decreased with equal suddenness by a prank of the weather or a seeming whim of the birds. Each roost is but a unit in an aggregation of similar units throughout the winter range of the starling. The temporary elimination of a roost or a reduction in its size, although of benefit locally, must be viewed as only a local adjustment in the whole scheme of starling economy. Another season, another week, or even another day may witness a return to former conditions by an influx of birds from other districts. Although roost eradication often has produced good results, there is no assurance that the benefits will be lasting.
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