WEC 162: Attracting Backyard Birds: Bird Feeder Selection
Figure 5. There are two general types of nyjer feeder, one, often referred to as a “thistle sock," consists of a fine mesh bag. Credit: B. Edmonds.
Figure 5. There are two general types of nyjer feeder, one, often referred to as a “thistle sock," consists of a fine mesh bag. Credit: B. Edmonds.
