Habitat, Theirs Or Ours?

As our habitat grows Is it our selfishness Do we think of the wildlife In our world of bliss The cougar will encroach On our habitat grounds And because he is there Will we take him down And the Duskey Seaside Sparrow What of she We have blanked her existence From all living tree's As all creatures will hear From the words below As we encroach on your habitat Future years will show We must learn now For tomorrow's too late How many in my lifetime Through the extinction gate