The Arch Window Feeder Squirrel Proof Cage Accessory turns the Roamwild Arch Window Bird Feeder into a songbird-only feeder. It clips onto the feeder in moments and its openings are sized so cardinals, chickadees, finches and titmice pass through while squirrels, starlings and pigeons cannot. Your view of the birds stays clear. $22.99 with free US shipping. Window feeder sold separately.

Key facts

• Fits the Roamwild Arch Window Bird Feeder only.
• Attaches by hand in moments; no tools.
• Durable, weather-resistant construction for year-round use.
• Blocks squirrels, starlings and pigeons; songbirds feed normally.

A window feeder is within reach of squirrels on the sill and of larger birds; the cage is the simplest fix. Problem Solved.