also brown back feathers of the male partridge are widely used but theres not many small brown feathers i tend to dye small grey feathers a light brown.
the back feathers on the females arent all that for ideal spiders but you get some good mixed colours on the neck of a female, id say get a few different feathers to test with then go with the results.
if you do go for a skin try and see it before hand
some have hardly any small feathers near the neck so try and get one with head intact, if not? try for one with as much neck as possible.
Tight lines