Well, as the snake grows the food items vary but here's my SerpenTrack (snake husbandry tracking site) records since I've been keeping them for my Southern Pine (normal)...(copy pasted from website so please forgive if formatting is funky).
Event Days Date Details Actions
feeding 1 days 2010-03-06 taken 3 mouse (small) f/t
feeding 11 days 2010-02-24 taken 3 mouse (small) f/t
feeding 19 days 2010-02-16 taken 3 mouse (small) f/t
feeding 23 days 2010-02-12 refused 1 mouse (small) f/t
feeding 27 days 2010-02-08 taken 2 mouse (small) f/t
feeding 35 days 2010-01-31 taken 2 rat (fuzzy) f/t
feeding 40 days 2010-01-26 taken 2 rat (fuzzy) f/t
...guess I lied a bit, seems like some were closer interval.