How to tell if my geese are male or female

[SheriS74]

I have two Chinese geese. I think. We can't tell if they are both males or females or one of each. Any ideas? My picture are Turbo and Chase.

 

[Yay Chicks!]

The resonator knob at the top of the bill will be more prominent on the male. Your picture is a little small to see. Also, I am not a goose expert, so I don't know at what age this happens.

 

[mississippifarmboy]

If you can get someone to show you how to vent sex them you'll find geese one of the easiest of poultry to sex.

I can never be sure any other way myself, although temperament and attitude, leg thickness and vocalizations are hints.

 

[CelticOaksFarm]

If you do not low how to vent sex, you can pluck feathers and submit them for DNA testing to determine gender.