Take a road trip from Kolkata to Siliguri.
Shaktigarh: Baptize the day with mishti doi at Shaktigarh. Drive on north, enshrouded by clouds on the way to Panagarh. This drive is especially beautiful, and makes for a pleasant stretch.
Nalhati: Stop off at Nalhati for some rice and macher jhol. Malda is just an hour's drive away. Head off north and trip on the amazing Fajli mangoes that Malda is known for.
Siliguri is still 260 kms away, most of which makes for some challenging driving. Once you've reached Dalkhola, the roads will even out. You aren't very far from your destination. Continue on past Kishanganj, where the 4-lane highway resumes. Then shut the engine and bird watch at Siliguri.