Alien bird species mapped for the first time

Scientists from University College London have studied the movement of ‘alien’ bird species between 1500 and 2000AD.

They found that there was a sharp increase in the rate of introductions in the 19th century when Europeans exported birds such as ducks, geese and pheasants to new territories.

Click on the link to read the rest of the article: Alien bird species mapped for the first time | Discover Wildlife

You will find more information here Mapping movements of alien bird species — ScienceDaily