be warned, all shelducks are to be kept in pair only pens away from all other ducks as they can and are very aggressive, though beautiful.
In the sticky section of the duck threads, I have a migratory/ornamental waterfowl thread going. It out lines all the care and requirements for all these types of waterfowl. Shelducks are also burrow nesters in the wild, so they do best if given buried nesting boxes. They are a tropical species, so southern climates are perfect for all species in this group, northern climates do bare watching in the hardest part of winter
There are quite a few breeders that keep these, though for the money, I'd go with radjah, ruddy, european, or even paradise shelducks. Caped shelducks are also nice, but a bit pricey again. I have kept all these over the years and really love them all, like I said, the only draw back is, they pretty much all need to be kept per pair in individual pens. The only exception would be the common, european ones, they can be kept in mixed collections of larger species, but not teal.