转自: BBC
Noise in urban areas could be increasing the mortality rate among young house sparrows, a study has suggested.
Researchers say the noise could stop adult birds hearing the hunger calls from their dependent offspring.
In their study, the team found that birds nesting in noisy areas were less effective at feeding their chicks as those that nested in quieter places.
The findings have been published in the journal Plos One.
http://www.bbc.co.uk/news/science-environment-18784607