I started to populate my access database today with my bird species. I’m running into conundrums already. There are 10,000 species of birds in the world. I want to include all of them in my master database. I also have list of all the US bird species of which there are about 2000. I’ve decided to concentrate on the US list first so I tried to link the data fields for family names between my world list and my US list. While I could get species names to match up, I have extra families in my US list that are not in my world list. The world list (based on sibley and moore?) has larger groupings of species into families. What’s up with that? Anybody know? I don’t have a specific example right now, but I probably shouldn’t let it slow me down too much. All of the species are accounted for, and most people probably won’t want to search by family.