There are stories of druids shifting to wild shape and living among nature for years, so I would assume they need to eat the same way their shifted shape would. It seems unlikely that they could be sustained from the magic of a single spell for that long.
I have always played and DM'd that wildshaped druids can take their normal meal times like the animal would. So if they're crossing a plain the druid could reduce the need for supplies by being a horse and eating grass
There are stories of druids shifting to wild shape and living among nature for years, so I would assume they need to eat the same way their shifted shape would. It seems unlikely that they could be sustained from the magic of a single spell for that long.
I have always played and DM'd that wildshaped druids can take their normal meal times like the animal would. So if they're crossing a plain the druid could reduce the need for supplies by being a horse and eating grass