City sparrows suffer from more
stress than their country cousins, find Spanish researchers, especially during
breeding season
Date: October 3, 2017
Source: Frontiers
Summary:
House sparrows are well-adapted
to living in urban areas, so it is surprising their numbers have fallen
significantly over the past decades. An investigation into this worrying trend
finds that sparrows living in urban areas are adversely affected by pollution
and poor nutrition. The study also finds the birds suffer more during the breeding
season, when resources are needed to produce healthy eggs.
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