We did check with the muslim collegues, and they didnt mind that
the chinese restaurant is not halal.
We didnt know that ducks & goose meats might have
issues. I think we generally only knows about Pork & Lard
being forbidden for Muslim Collegues.
I even requested to get them with fork and spoons instead of
chopsticks & chinese spoons.
And the restaurant has indian waitresses working there so I
didnt think it might become a issue.
Anyway, the muslim collegues was very nice about it. They
didnt make a scene. But I always feel a bit bad, that I
missed out on the duck & goose they cannot eat problem.
nonsense. Ducks are just as halal as chickens are.
the only birds which are haram are birds of preys, ie eagles,
hawk etc, birds which hunt with their talons.
Although ducks are carnivorous in the sense that they eat fish,
fishes are halal too, therefore, ducks are halal creatures.
the only way that the duck is not halal is that it might not be
killed properly in the halal manner.
but since your friends are not strict muslim, the method of
slaughtering probably doesn't matter, and they are more concern
with whether the animal is a halal creature.
source: http://www.central-mosque.com/fiqh/fhalal1.htm
google it, and all sources will tell you that ducks and geese
are halal.