I haven't been able to find an exact quote about pickclaw spawn times, but I remember it being super fast as well, and I found a '99 reference to at least one mob being on a 6min timer in the zone..
"there is a prisoner called Osargen in the jail - he is on a 6 minute spawn"
http://www.eqclerics.org/forums/arch...p/t-10599.html
eqclerics is a superdope resource for little stuff too