City birds produce fewer, smaller chicks
A new study suggests life in the city diminishes the fertility of birds. A team of researchers from the Ludwig Maximilian University and the Max Planck Institute of Ornithology found birds living in urban settings produce fewer and smaller offspring than birds in rural settings. Scientists frequented 600 nest boxes of the great tit, Parus major, in the forest of Germany, as well as 156 nesting sites within the confines of Munich.
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