Some of them rush over to the door and start munching on whatever tasty bits are being offered. Some of them, though, won't touch the food (unless it's exceptionally tasty) until they've had their scritches. A nose bump, a scritch or two behind the ear and then they will eat. Not all the time, though, either. Just sometimes and generally the bucks more so than the does. Sometimes, if they've had all kinds of forage stuffed in their hutches, then they aren't all that interested in pellets. Other times they still want pellets even after eating tons of ti leaves.
I guess they aren't all that consistent.