hi i see u have 5 caquies i see feathers picking mine started to pick because off gonads n a little weight he was tested by an avian blood test n xrays wow its expensive but my bird is worth it.they gave me medications n i put collars on him did u take them to vet ?u should if u didnt yet it will save your birds life.i thnk since u have 5 its gona be difficult to cut the habit since they have hormonal inbalance please help them love your videos give me an update thanks