Hi Tristan and a warm welcome to you from all the Staff and Moderators. It's not albino as he has some colouring to his feathers. I think it is maybe has some Mallard.
To find out more about the differences between Albinism and Leucism, here is a link to the relevant part of our Opus Dictionary:
Dictionary A-C - BirdForum Opus
Meanwhile I think I'll move your post to the ID forum, there are some that specialise in working out what species these odd ducks are likely to be descended from.
I'm sure you will enjoy it here and I look forward to hearing your news.