Northern Cardinal
The male Northern Cardinal is perhaps responsible for getting more people to open up a field guide than any other bird. One fascinating northern cardinal bird fact—mostly male birds do the singing, but this is one of the few species whose female sings. A pair of cardinals might even share song phrases, using them to communicate at nesting time. Female cardinals will sing back and forth to reinforce pair bonding early in the breeding season.
Diet
Mostly seeds, insects, berries. Diet is quite varied. Feeds on many insects, including beetles, true bugs, grasshoppers, caterpillars, ants, flies, and many others, also spiders, centipedes, and snails. Most of diet is vegetable matter, including seeds of weeds and grasses, waste grain, leaf buds, flowers, and many berries and wild fruits. Young are fed mostly insects.
