Niger (Nyzer/Nyjer) Seeds
Nyjer Seed is also called "thistle" seed, and comes from Guizotia abyssinica plant native to Africa. Nyjer seed is exported mainly to America and its sub continents. Nyjer seed is popular in recent years, largely due to its ability to attract finches including American Goldfinch, Pine Siskin, and Common Redpoll.
Because of this composition, Nyjer is especially popular as a winter bird food, when birds require foods with more oil and a higher calorie content so they can store fat to survive colder temperatures. The protein in Nyjer is also useful for regenerating feathers when birds molt in the late fall and early spring.