Because that's how my female geese were selected! I ordered through a supplier over a month ago. Specified female everything. Called to update my order a while back and re-asked "so everythings female right?" "well, I ordered the geese straight run, but we can pick out a female" Oh, ok. (thinking they knew how to vent sex.) Show up today to pick up my order, and remind them: I want female geese. Ok. Out comes the pendulum! I waited over a month to specifically order female geese; all this time I could have just picked some out at the feed store! Oh well. Live and learn.