Bwbarton
On Down to Earth web site, said add two cups,mix, wait 24to 48hrs,check if pile is heating,add another two cups. Did not give size of pile.
Personally I have a small pile of arborist wood chips and leaf mold, with feather meal and used coffee grounds composting now(been covered with tarp all winter)
I would have thought the combination woodchips and manure would be ideal. Although hardwood chips would decompose slower than soft wood.
As per my soil test. For my seedling beds I tilled in about 2 inches of arborist woodchips, added about 2 lbs of feather meal, tilled in about 6 inches deep, covered bed with another 2 inches of arborist woodchips. This was last August, beds won't be used till 1st of May. Looking great so far.
Feather meal is most effective tilled into soil or mixed into compost pile. The microbes in your soil or compost break down the feather meal. They say it can last from 3 to 6 months. Starts releasing nitrogen in as little as 5 to 7 days.
Hope some of this is helpful.
Good luck with your garden.
PS. the arborist woodchips I use are aged,probably 1 year or more.