Tree swallows make good neighbors that will help defend bluebirds from sparrows, but these bird houses also invite sparrows, so monitor the swallow houses as well as the bluebird houses. This birdhouse is very unique. It begins with the basic style of a bluebird birdhouse. Buy Going Green Bluebird House at Walmart.com So this birdhouse plans would go great at any home. Free 2-day shipping. Healthy Planet, Healthy Birds. Go ahead and give it a try. The "Going Green" line of … The USA-made line of 90% recycled plastic helped establish Woodlink’s commitment to ecological sustainability for birds and humans alike. The USA-made line of 90% recycled plastic helped establish Woodlink’s commitment to ecological sustainability for birds and humans alike. So if you like the idea of being able to watch birds from inside your house … The Green Roof Birdhouse. In 2008, the Going Green line of birdhouses and feeders was introduced. A Going Green Bird … … But it will stand out because of its unique design. In 2008, the Going Green line of birdhouses and feeders was introduced. A Going Green Bird … If you are feeding wildlife then you are an environmentalist and you understand the importance of protecting habitat for birds and animals and you probably want to help. Healthy Planet, Healthy Birds.