An experiment to see if pollution has an effect on bird populations was conducted. The reason that this is important is because it can tell you whether bird populations are an early indication of heavy pollution in an area. By knowing they can be an indicator, we can use them as a sign to take care of our environment more seriously in different ecosystems. This is crucial information because it may even tell you how healthy of an environment you live in. The hypothesis was, if an environment is heavily polluted, then the bird population will be low because research shows that birds die/migrate away from polluted areas to find a healthier habitat. The approach for investigating this experiment was to simply use reliable websites to gather data and information. Throughout researching, this experiment reached the expectations prior to research.