Why is hunting for food hard for the pilgrims?

Because they didn't know what they were doing and they weren't prepared when they got here.Why is hunting for food hard for the pilgrims?
Most Puritans that came to Massachusetts in that first wave were once upper class people in their native England. Some of them had not even shot a gun, let alone get their food anywhere other then the market or what their servants provided for them. Plus the wheat they brought failed in New England and they weren't accustomed to the weather. Also many of them became ill that first winter, making it hard for them to hunt.Why is hunting for food hard for the pilgrims?
Most of the people who came to New england were not country people. The list of occupations of the men who came to America include two tailors, a printer, several merchants, a silk worker, a shopkeeper and a hatter, among others. They would not have been accustomed to hunting at home, or for that matter growing their own food.
Because they don't know what's edible and what would kill them? Or where to find what could be eaten. Or the best ways to hunt down local game.