thinking of adopting an african grey
 

I am thinking of adopting an african grey, the owner passed away and has a few birds that will be looking for a new home. Anyone out there that has one have any good websites or books that I can check out to learn more about them before I say I do.. I am still looking after my daughters love bird and have had budgies in the past but nothing this size so all info will be helpful. Are these birds very loud? like how much louder than a chatty love bird with its high pitches.