First of all, I want to say that I don't hate this map. I love the fall colors and all of the animals on the map. However, I think there's some things that are clearly missing from this map and potential changes that would make it significantly better.
First, the Bobwhite Quails on the map are out of place. NEM is based in the White Mountains of New Hampshire, which has no wild population of Bobwhite Quail as far as I know. The Bobwhite Quail on the map are found of the east side of the map. It would be very easy to remove the Bobwhites from these regions of the map and replace them with the American Woodcock, a much more common game bird species in New England that is around the same size.
Furthermore, I would like to see the Ruffed Grouse added to NEM, since this is a commonly hunted and widespread grouse species in New England, as well as the most widely distributed game bird in North America. It would probably live in the northern half of NEM, since the southern half has more farmland and less forest, and these grouse are more common in forested regions.
The next species I want to see added to NEM is the Groundhog (also known as the Woodchuck). This species lives throughout the Eastern United States in a variety of habitats, such as small woodlots, low-elevation forests, fields and pastures, and hedgerows. Many of these habitats are common throughout NEM, especially in the southern and eastern areas of the map. These little critters would live in burrows the same way that European Rabbits do.
One final species I want to see added to NEM is the Snowshoe Hare. Snowshoe Hares are another very common species in New England, a very widespread species in North America, and commonly hunted in New England. I think that the Eastern Cottontail Rabbits on New England should be moved to the south of the map, and the Snowshoe Hares should occupy the northern half (which is better habitat for the Hare than for the Cottontail).