you can get insurance for them based,on there overall value,to replace them, or a fixed price per bird to replace them, all they want to know is total content value in loft, it is a specialist market and big brokers wont look at you, and it is not very expensive,,,as you might think.... location has a big part to do with it,is there alot of thefts,arson,attacks etc,in your area, all comes in to it,when the want to insure you,