Hi Shinnen, besides putting out wild bird seed in winter, many birds really love when I put out suet.
Keep in mind there are some plants that will thrive in your climate and some that won't. I know for sure American Beautyberry won't survive up north. I sent a friend in Indiana several plants but they never made it.
Besides what's already been mentioned, Serviceberry and Nannyberry are other good choices.
Juneberry (Amelanchier canadensis)
Nannyberry Viburnum (Viburnum lentago)
