I tried using the file.txt method. The only tag that got written was Keywords. Comments and GPS were rejected. The tags I was trying to write are not standard tags. So, I have been trying to get .exiftool_config to work. All it managed to do was to write my tags as values.

They tags I want to create are:

Taxon
TaxonCode
Phylogeny
Order
Family
Genus
Species
CommonName
Description
IdentificationBy
Country
State
County
CountyCode
Locality
LocalityCode
Sublocation
GPS
Importance
Control
Range
FlightPeriod
Food
Development
PhotoQuality
Aspect
Disposition
Photographer
Keywords
Comments

Eddie D.