Do cardinal birds molt?
Beside this, do Cardinals molt every year?
So they need to be replaced every so often. This is what molting accomplishes- renewal of a vital system. Many birds molt once a year. Some partially molt again right before mating season to switch into their most colorful feathers.
Keeping this in consideration, do cardinals lose their feathers?
It's usually summer, after the nesting season, when these "black-headed" cardinals show up. Guess what most birds do after the nesting season. They shed their feathers and grow new ones. This molting process occasionally produces a baldheaded cardinal when a bird loses all its head feathers at the same time.
Bald Northern Cardinal by George Silverstein. Birds molt their feathers throughout the year, and one possible explanation for baldness is that an abnormal molt occurs on some birds, causing them to lose all of their head feathers at once. The birds may be juveniles undergoing their first prebasic molt.