I have been visiting a local trail at Riverside Park in Cambridge frequently. The walking is easy in this marshy area and the birds are plentiful. Tree Sparrows are seen by the dozen. Chickadees feed easily from your hand and several Blue Jays are about too. I rarely see Blue Jays at home, even for easy peanuts. On New Year's Day, my husband and I were treated to a very vocal Pileated Woodpecker near the walkway. White-breasted Nuthatches and Juncos are also plentiful.
There are likely similar clusters of Cardinals in Massachusetts in wooded and marshy areas. They eat of varied diet of seeds, fruit, buds and insects. There bright colour and cheery cheep is always welcome in the winter.
I have mentioned before that Northern Cardinals were not found in southern Ontario fifty years ago. Their range has gradually spread northward as has the range of the House Finch. They are not found in northern Ontario even in the summer.