I'm not so sure about an EXULTATION of larks but a BUSINESS of ferrets FITS!
Lotsa business folks are skunks. They emit a stench of greed and shoddy business practices because they WORSHIP the bottom line. Very skunklike.
ALL business people? Or course not. Just the ones you hear a lot about..the movers and shakers and powerful.
Every one of them too? Of course not. There are always exceptions.
But all in all I do think a BUSINESS of ferrets fits. I wonder which brain and when coined that?