We have some new birds that have been with us about three weeks now. Out of the 25 birds, 3 or 4 look (on occasion) ruffled and slightly dull. They are eating with the others, their droppings are not watery. They roost on the floor rather than the V perches, but otherwise do not seem to be worried. The floor is clean, their water is fresh and clean and the feeders are spotless. In the three weeks of having them, there is no real change, that is the ones that are dull now were dull on arrival and this was assumed to be transport to a new environment. Do you recommend group treatment with an antibiotic or wormer or just make sure they are kept warm and comfortable. Any advice to someone who would be happy and knowledgeable with livestock but unsure about what to do with birds.