Try one of these authors (ms available on ResearchGate):

Kartzinel, T.R., P.A. Chen, T.C. Coverdale, D.L. Erickson, W.J. Kress, M.L. Kuzmina, D.I. Rubenstein, W. Wang, R.M. Pringle. 2015. DNA metabarcoding illuminates dietary niche partitioning by African large herbivores. PNAS, online early.

The above mentioned authors are Ok

You could try the Natural Resources DNA Profiling & Forensic Centre (NRDPFC) at Trent University in Ontario.

http://web.nrdpfc.ca/

For bats, a lab at Northern Arizona University is providing this service:

https://www.researchgate.net/publication/275643879_Species_from_Feces_brochure

Research Species from Feces brochure

Try contacting Lisette Waits from the University of Idaho. She and her colleagues have work a lot with DNA analysis from faecal samples.

http://www.uidaho.edu/cnr/fishwild/lisettewaits

Cheers,

Wilfredo

http://www.uidaho.edu/cnr/fishwild/lisettewaits