Northern Cardinal
Cardinalis cardinalis
Long beloved as a symbol of Christmas cheer, the Cardinal is unique in appearance and so is a very easy bird to identify. Its peaked head (known to birders as a crested head) and vibrant scarlet color stand out in any landscape. Bird watchers know that providing a bird feeder for Cardinals is the best way to ensure visits from these delightful birds. Even in the deep snows of Canada and the northeastern United States, Cardinals remain at their homes all winter. Their nest is a cup set low in shrubbery and contains three to four light green eggs. Immature birds are buff in color.
http://www.americanbirdguide.com/cardinal.shtml

Mating Habits
At Your feeder you may see what is referred to as mate feeding. What you'll see is the male picking up a seed, hop over to the female, and the two momentarily touch beaks as she takes the food. Mate-feeding continues through the egg-laying and incubation phases of breeding.
Typically cardinal pairs remain together the whole year. Although in winter the bond may be relaxed. Pairs often stay mated until one dies at which time the surviving mate will look for another partner. Mating for life is often used in field guides.
http://www.wild-bird-watching.com/Cardinal.html

Nest: Compact and well lined to flimsy and scarcely lined; of weed stems, pliable twigs, bark strips, grass, rootlets, with leaves and paper interwoven, lined with fine grass, hair.
Eggs: Three to four. Grayish-, bluish-, greenish-white, marked with browns, grays, purples. 1.0" (25 mm).
http://www.birding.com/topbirds/9521nocard.asp


Habitat:
Woodland edges, fields, thickets, brushy undergrowth, suburbs, gardens, feeders with sunflower seeds, swamps, desert washes, riparian areas. Very common in the east. Both sexes sing almost the entire year.
http://www.birding.com/topbirds/9521nocard.asp

Full Scale Cardinal Wood/Craft Pattern
http://home.att.net/~iso9k1/bird/cardinal.html

Thanks Arty! I love my cardinals. I have a pair that come each day to my feeders.