sexing rescued geese..a little help? 'photos'

[spish]

we've just rescued a couple of geese....and i was just wondering if it was possible to 'sex' them? one has a stomach that is really low above the ground, the other one doesnt have this, would it be a male and female pair perhaps?

 

[servpolice]

Top picture is female and the male is in both other pictures.

 

[servpolice]

So yes you do have a pair