Black-oil sunflower seeds are the best loved of all bird feed. They have a higher meat-to-shell ratio and fat content than the striped types and birds can crack them open more easily.
The softer outer shell makes it easy for smaller birds like chickadees, titmice and finches. The seed also boats a high concentration of oil which is especially important in the Winter.
Tufted Titmouse
From The Old Farmer's Almanac
