Halfway between the House Sparrow "comfort zone" and your viewing windows, install a tray type feeder or large fly through style feeder with a large perching area. It can be hung in a tree or set on a post above the ground.
The Jay Feeder, filled with Mother Nature's precisely formulated Jay Woodpecker mix (a mix of peanuts, corn, large sunflower seeds and other seeds), is exactly what you will need to attract jays, grosbeaks and even some woodpeckers. These larger feeder birds will appreciate the goodies in this mix and having a larger feeder to eat at.
The addition of a water source in the area of the feeder will complete this "comfort zone".
Chickadees, nuthatches, finches and assorted relations will all appreciate not having to compete with the jays for water.
The Blue Jay
The Blue Jay is gorgeously blue, with black bars and white patches on its wings and a long fan shaped tail. The Blue Jay's breast and belly are smokey gray.
The Steller's Jay
The Steller's Jay is easily recognized with its deep blue body and black crest, throat and upper breast. The Steller's Jay, like its cousin, the Blue Jay, is a truly handsome bird.
The Northern Cardinal
The Northern Cardinal is probably the most colorful bird to appear at a feeder. It is a non-migratory bird but prefers to live where winters are milder (not in Western Canada). Cardinals loves our "Mother Nature's Cardinal Mix" as well as sunflower seeds.