As a Northern Grower, I have had the good fortune to monitor and assess many varieties of apples over a twenty year period. Most of our growing region here in Vermont stretches across several USDA zones. From the coldest regions of zone 3a,b along the Northern boarder of Quebec to the much milder region of 5a,b in the Champlain Valley and southern Vermont has allowed me the opportunity to collect enough information to make some sound recommendations with a good degree of confidence for success.
Honeycrisp: Best suited for USDA zones 4 and 5 in but in areas where risk is low for cedar apple rust. HC is moderately susceptible to foliar scab but fruit has good resistance. Honeycrisp although crowned winter hardy does at times suffer some dieback or mortality during extremely cold winters. Unless thinned, can be somewhat biannual bearing. Best feature is the apples hang well after ripping and yield are usually high during fruiting years. Excellent choice for wildlife.
Enterprise: Good disease resistance, few problems with winter kill. Somewhat biannual. Like Honeycrisp fruit hangs very well into late season. I rate it very good for wildlife.
Liberty: Very winter-hardy. Extremely winter-hardy in zone 3a. . Fruit starts to drop when ripen around 1st week of October in Northeastern Vermont. Much of the fruit drops by mid to late October but retains enough fruit to last sometimes into early December. A very reliable producer with excellent disease resistance.
Snowsweet: Tree is winter-hardy but have witnessed some winter kill during two back to back very cold winters. Great for eating. Disease resistant. A good choice for wildlife.
Empire: Great eating and winter hardiness. Fruit falls after ripping. Nice to have in the orchard and great to eat but lacking in the best characteristics for wildlife.
Cortland: Great eating and for processing. Susceptible to scab. Easy to grow and great winter-hardiness. Fruit does not hang well into late season. Not recommended for wildlife
Northwest Greening: Bi-annual, winter-hardy. Not a great producer. I give it a poor rating for wildlife.
Redfree: late summer apple. Very disease resistant. Annual Producer. Apples fall off in early September so not one I would recommend to sustain wildlife in late season.
Jonafree: Good Disease resistance, but not highly productive.
Honeygold: Very bi-annual. Wildlife likes them but if you don't mind it produces every other year, than give it a try it.
Wolf River: Winter-hardy. somewhat Bi-annual. Great for pies. Not on my best list for wildlife.
Fortune 429 (empire x Northern Spy): Great for cider but apples fall shortly after ripening. Biannual bearing. Not recommended for wildlife.
Franklin Cider: Extremely winter-hard, Immune to Scab and CAR. Excellent annual production, apples hang into late season. Favored by deer due to very high sugar content. Great for making cider. Excellent for wildlife.
If I had to pick 5 varieties based on what I think is the ideal apple tree plot for wildlife for Northern Growers I would go with the following varieties:
Honeycrisp, Libery, Enterprise, Snowsweet and Franklin Cider. This combo has been a reliable source of mast crop production on our property and has provided us with much hunting opportunity as well to sustain wildlife into late season. My rootstock of choice is B118.