how it related to united states?
It is the state bird of seven U.S. states
Northern cardinal
The northern cardinal is the state bird of seven U.S. states, more than any other species: Illinois, Indiana, Kentucky, North Carolina, Ohio, Virginia, and West Virginia; although in each case the particular state just refers to the bird as "cardinal". It was also a candidate to become the state bird of Delaware, but lost to the Delaware Blue Hen.
what time of year do you see cardinals UNANSWERABLE what is this entity? It is a bird what does it eat? Their diet consists mainly of weed seeds, grains, and fruits.
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Northern cardinal [SEP] U.S. state bird
The northern cardinal is the state bird of seven U.S. states, more than any other species: Illinois, Indiana, Kentucky, North Carolina, Ohio, Virginia, and West Virginia; although in each case the particular state just refers to the bird as "cardinal". It was also a candidate to become the state bird of Delaware, but lost to the Delaware Blue Hen.