There are several varieties of Chickadees. The most common is the Black Capped Chickadee. It has a black bib and white and gray coloring also. It is found in the northern United States clear up through Canada to Alaska. It is a small bird about 4.5 inches in length. Males, females, and juveniles are similar. It likes sunflower seeds but it doesn't have the "tooth" that the Cardinal has. To open a sunflower seed, the Chickadee will perch (either on a feeder perch or a tree limb); it will place the seed between its feet and peck at it with its beak until the hull splits open. This looks like very hard work for such a small bird.