Another unexpected complication about world-building is animal names. Not all animals. I'm going to call a lion a lion. But when you get around to some species, it's not so simple.
For example, the Townsend's warbler is a beautiful little bird I sometimes see. It's named after an ornithologist. There's no reason that another world would name a bird after a guy from this world. And sure, I could make up some back story for a guy with the same name who had a part in the history of this bird.
But when an American bird species (or African, etc) is named after a European scientist or explorer, that's a problem in itself. It's not like that person discovered the bird. It's pretty much a guarantee that the species already had a name in the local language.
And on top of that, some bird species are actually getting new names because they were named for people that did bad things.
For other cases, it's silly to use a French name for an American bird (such as the grosbeak).
So, when I want to have a specific bird appear in one of my stories, I sometimes have to give it a new name. I've found a couple old-fashioned names that work. And for others, I've gone with American-Indian names for the birds. A couple others, I've just reworded.
There are so many things to figure out!
