Contrary to popular belief, cardinals prefer foraging on the ground instead of being perched high on feeders. One study in North Carolina revealed that Cardinals spent 77% of their time foraging on the ground.
During the breeding season, male Cardinals may sing 200 or more songs per hour in the early morning hours. Mated pairs will often sing duets together.
The Northern Cardinal is actually one of seven species in the world with the name Cardinal. Although it is a bird that historically called the Southern U.S. its home, the modifier Northern is appropriate because all of the other six species are located in South America.
The Cardinal name was derived from the Cardinals (the rank above Bishop) of the Roman Catholic Church who wear red robes and hats.
Young Northern Cardinals have black bills rather than the orange-red of the adults. It gradually changes to the adult color three to four months after hatching.
The red color of the Cardinal’s feathers is the result of pigments called carotenoids. The amount of the pigment ingested, and then deposited in the feathers as they molt, influences the quality and depth of their coloration.
The ability for Cardinals to digest food varies with the temperature; studies have shown that digestion efficiency rates are 16% higher at 77 degrees than at 32 degrees. This suggests that Cardinals must consume substantially more food during cold weather, especially when it’s below freezing.
The food habits of Cardinals change during the year. A study has revealed that from November through April more than 75% of their diet consists of vegetable material; the month of July drops to a low of 35% vegetable material, while the remaining months vary between 50 to 70%. The availability of insects (beetles, grasshoppers, crickets) is the prime reason for this fluctuation.
The size of the Cardinal’s breeding territory varies with habitat quality and population density, but generally ranges from two to ten acres.
The oldest recaptured banded Northern Cardinal was still alive at 15 years and 9 months old.
The Northern Cardinal is the state bird of seven states: Illinois, Indiana, Kentucky, North Carolina, Ohio, Virginia and West Virginia.
Fun Facts About Cardinals