A seed mix made entirely (or primarily) of Nyjer (thistle) seed — a small, high‑oil, high‑energy seed specially suited for finches and other small songbirds. Nyjer seeds are very small and high in nutritional value. They’re easy for small‑beaked birds to eat and provide excellent energy thanks to their high oil and fat content, which helps support birds’ metabolism, especially if they are active or under environmental stresses.