Toulouse geese are really difficult to tell the gender on. Look for a proud, tall standing goose and that may help you differentiate a male. But once egg laying season is around the corner, you’ll definitely be able to tell the difference. Especially when breeding season comes. Males get more aggressive and the females will have a patch of feathers missing on their head/neck area from the male. I’m sorry I can’t tell these geese apart. I’m not expert on goose genders lol. I have two white Chinese geese and they are much different from Toulouse.
if you really want to know their genders, you can send feathers or a blood sample in to a bird DNA site and they will tell their gender apart.
But if you are skilled enough, you can vent sex them. But you have to know what you’re doing.