The northern cardinal is so well loved that it has been named the official bird of no fewer than seven U.S. states. The male northern cardinal is perhaps responsible for getting more people to open up a field guide than any other bird. They are brilliant red all over, with a reddish bill and black face immediately around the bill. Bright red cardinals are easily identified by even casual bird watchers, and are often seen frequenting backyards and bird feeders. When foraging elsewhere the birds eat insects, seeds, grain, fruit, and sap.