I live in Holland, There is a bird flu out break nearby ( within 30km of us) and farms have been culling. It is not the deadly H5N1 but needs to be taken seriously. What advice can anyone give for us to protect our 6 hobby chickens? They are normally free range but I could lock them in - but that might be OTT and they would get restless with each other. What extra hygiene measures should we take? Advice gratefully received.