- Although it can climb up the trunks of trees and hammer on wood like other woodpeckers, the Northern Flicker prefers to find food on the ground. Ants are its main food, and the flicker digs in the dirt to find them. It uses its long barbed tongue to lap up the ants.
- The red-shafted and yellow-shafted forms of the Northern Flicker formerly were considered different species. The two forms hybridize extensively in a wide zone from Alaska to the panhandle of Texas. A hybrid often has some traits from each of the two forms and some traits that are intermediate between them.
- The Red-shafted Flicker also hybridizes with the Gilded Flicker, but less frequently.
- The Northern Flicker is one of the few North American woodpeckers that is strongly migratory. Flickers in the northern parts of their range move south for the winter, although a few individuals often stay rather far north.
- Northern Flickers generally nest in holes in trees like other woodpeckers. Occasionally, they’ve been found nesting in old, earthen burrows vacated by Belted Kingfishers or Bank Swallows.
- Like most woodpeckers, Northern Flickers drum on objects as a form of communication and territory defense. In such cases, the object is to make as loud a noise as possible, and that’s why woodpeckers sometimes drum on metal objects. One Northern Flicker in Wyoming could be heard drumming on an abandoned tractor from a half-mile away.
- The oldest known yellow-shafted form of the Northern Flicker was a male and was at least 9 years, 2 months old when he was found in Florida. The oldest red-shafted form of Northern Flicker lived to be at least 8 years, 9 months old.
