Ok,c my 6 1/2 week old BA's and BR's have cheeped, chirped, 'crooned' over treats and 'squawked' about being rounded up. Today, the BA that I suspect will turn out to be a Roo, started (I can find no better description) TRILLING. Within a minute or so, all the older ones joined in and were trilling right along with him/her. Now not much they have done (or said) has surprised me cuz I spent a lot of time on here before I got them. But I have never heard of them making this particular sound before. Anyone have any comments?