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When the natural suitable nesting sites are rare, some birds can adapt to habit on the buildings or the pylons. In the coastal cities, there are many gull species that their nests have raised on the roof of the buildings. Many studies suggest that most nesting birds on the buildings have high reproductive success because of safety life from predators and the bad weather. Nevertheless, bird nesting on the buildings give both advantages and disadvantages to human. The nesting birds on the pylons are often collision or electrocution. However, providing some tools or nest boxes with the pylons could make the birds build their nests easier. Currently, there is a growing awareness of preserving rare bird species with its nest on the buildings and the pylons.
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