A huge birdcage installation with a Javan myna standing confidently on the top and a sparrow following it panicking and crying. People can enter the installation to explore the story of alien invasive species. Have you also notices? The sparrows around us are getting less and less while Javan mynas are growing more and more. People import Javan myna from Southeast Asia as a pet bird because of loving its simulation of speaking but abandon them or they escape. It hugely reduce the quantity of sparrows, which have already suffered from the life threat due to human urban expansion, the reduction of farming fields, and excessive use of pesticide. Other than Javan myna, the cases of alien invasive species includes Green Iguana, Pomacea Canaliculate, Red Imported Fire Ant, Mile-a-minute Weed, Water Hyacinth, and Tessaratoma papillosa Drury. We must develop our environmental awareness, understand and avoid the critical hazard of alien invasive species caused by our behaviors, and not keep any alien species as a pet at home. If you have already had them, please do not abandon them and put them away to the nature to avoid continuous deterioration of ecology, spreading of diseases, and extinction of native species. Eventually, it will endanger the survival of human beings.