Looking at results from this year's Great Backyard Bird Count, it's easy to see that some of the most reported birds are non-native species. In Idaho, chances are that a number of non-native species could make an appearance in your backyard, including house sparrow (above), starling, house finch, California quail, rock dove and others.
What does this mean for bird conservation? What impacts are these birds having on native species? Should we be concerned? Should we be doing something?