Rose-ringed Parakeet is currently expanding its range across Western Europe. It can be a serious agricultural pest and competes with native birds for nesting cavities. Credit: Oregon State UniversityFrom Live Science:
The expansion of world trade has long been blamed for the rise of invasive species and the environmental havoc such hitchhikers have dealt to delicate ecosystems. Now new evidence may bolster the case for new policies to combat the problem.
A new study found a significant decline in the number of bird species introduced into Eastern Europe during the Cold War, a time when much of the trade and travel between the region and its western counterparts ceased.
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