Excerpted from “Feeder Facts” in “Popular Birding Series: Backyard Birding,” published by WildBirdmagazine.com publisher BowTie, Inc.
   
Usually made of clear plastic or acrylic, window bird feeders attach to a window either with suction cups or by fitting inside the window frame. This type of bird feeder allows up-close viewing of your wild bird visitors. Birds also might find the bird food more easily because they can see it through the clear plastic.

Window bird feeders come in a variety of styles, from hoppers and suet bird feeders to platform bird feeders, sugar-water feeders, jelly bird feeders and tube feeders. Some of these bird feeders include a one-way mirrored back so that movement inside the home won’t disturb the bird as you watch it dine on bird food.

Window bird feeders make great mealworm feeders, which attract bluebirds, chickadees, Gray Catbirds, Northern Cardinals, Northern Mockingbirds, thrushes, titmice, woodpeckers and others. You can use either fresh or dried mealworms.