They are getting plenty of a light mixture just now coated in hemp oil everyday i had virkon s in the water for a few days last week then multivits for 2 or 3 days now now fresh water but i bought another bottle of cider vinegar earlier on so will give it to them now and again aswell ps...birds look smashing but i wouldnae expect anything else at this time of year they are also getting a bath every 3 or 4 days tae...