I also have no idea if anyone operates in Nigeria. I seriously doubt it and think it really speaks volumes when operators who can do business in countries like Zim won't touch an area for whatever reason (like Nigeria or even Egypt for that matter). That said, I would DEFINITELY go on this trip! Just like if the Egyptian Minister of Environment invited me to hunt Crocodiles on Lake Nasser, I'd be there even though there is no formal process of licensing. If I were in your shoes, I would first get online and find out what species exist in the area you will be hunting. Then I'd do some research as to the populations and decide which species your ethical barometer will allow you to pursue. Then you might make sure you can get horns and skulls and dried hides legally imported to Denmark from Nigeria. IMHO, if you are content with photos, you needn't worry about anything more than whether or not the species in question exist in locally sustainable numbers. You will have to do some research though to make sure your potential actions are in keeping with sustainability in the local populations. Something tells me, Nigeria's game department isn't too big on collecting that data. You might also be wise to make it clear to your hosts that you only wish to hunt certain species and not others. If you do not do this, as an extreme example, you might find yourself in an uncomfortable situation where you risk insulting them by not accepting their gift of say...a gorilla trophy. You don't want to find yourself socially pressured into hunting any animal that way and, if your hosts wish to honor you, it could theoretically happen to a lesser degree.

JMHO,

John