Eliminate species duplicate names (things like birdofprey and birdsofprey)
Value
the vector of species names with standardized names, according to the species names that have already been encountered in the past datasets.
Examples
species <- c("zebraplains", "zebraburchells", "duiker",
"duikercommon", "aardvark", "lionfemale")
clean_species(species)
#> [1] "zebraburchells" "zebraburchells" "duikercommon" "duikercommon"
#> [5] "aardvarkantbear" "lionfemale"