Open PlatformSong Sparrows Catbirds Brown Thrashers Phoebes Robins Mourning Doves Blue Jays House Finches Home Birds Birdhouses Birdhouse Plans Birdhouse Forum About Birds Birdhouses Plans Home Print the open platform plans. Read how to build and mount the Open Platform. See which birds nest on this platform. Visit those Bird Pages. See their nesting habits and where they live. Last, build the platform and install it in the right place.