Wildlife refers to all of the animals and plants not domesticated by people. Wildlife is found all over Earth--mountains, valleys, deserts, oceans, even a puddle can have wildlife. The more wildlife species an area has, the greater the biodiversity. This impacts on the health of an ecosystem. Of course, human activities can have an effect on wildlife in an area. For example, as forests are cut down to grow crops or to develop the land, many types of wildlife lose their habitat. This leads to endangerment or extinction. An example is the decline of songbirds due to habitat fragmentation and deforestation.