Yes feed is available every hour they are awake. I take it up when they go up to roost for the night to deter the rats from coming from the woods ugh but I put it back out first thing in the morning (if not theyl carry on quite loudly until I do haha). And I always put out fresh food in the morning, I don't put the same food from the night before that sat all night.Not likely. Cut out all treats util they start eating the new feed.
Do they have the feed available every hour they are awake?
If not, they should.
Is the new feed a different shape, i.e. pellets vs crumbles?
Always a good idea.
Old and new food are pellets but the new stuff might be slightly bigger and not as soft