Following birds along the pathway to invasion

The article focuses on the study that determines the environmental change brought by the invasion of bird is species beyond their native geographic range. It explores the migration of birds which is viewed by many as beneficial additions to the animal life in a particular region, while others considered it as destructive to the environment. Moreover, researchers note that invasion of birds is a natural biological process, so it requires better understanding of the process.Tim M Blackburn, Julie L Lockwood and Phillip Casse