I am attempting to make a mold of my bird bath, but the problem i have is how do i do the bowl part so that i can fill it with concrete easily without having a noticable fill point cast will be out of latex

I am not sure if I understand the question. Were you thinking about making a hole on the top to fill concrete? Is there a reason you couldn't fill the latex mold upside down so you fill it starting from the base? Maybe you could explain a bit more, then we could help?

Sorry about that i am making a latex mold of the bowl and at the bottom it has a small part about an inch wide were i can fill the concrete but will the concrete pour easily through the opening of this size and not trap any air or do i need to add another pour hole elsewere? hope that helps

I believe you should have a larger fill hole, and to minimize air bubbles you should spray the mold with rubbing alcohol