I have never read anything about keeping loons. Does anyone keep them? Is it legal? If so, what are they like? What do they need?
There is a huge difference between keeping omnivorous ducks which do well on grains and commercial feeds, and keeping picivorous species such as loons, not the first of which is expense. You need a steady supply of the proper diet, which gets very expensive, as well as a lot of freezer space to store it. Then there's the knowledge needed to understand that the diets of picivores need to be supplemented due to the degradation of certain vitamins in their frozen diets, unless you happen to have a very reliable source of fresh food. Plus, loons do not walk very well on land, so need a facility with open water all year round. For these reasons, they are not even commonly kept in zoos.
I agree with the above.
Loons will need lots of space ,and are quite territorial. Along with lots of water they will also need very clean water. Not the muddy flith ducks are happy to swim in. Either daily water changes or a strong filtration system.
Also no ,without permits they are not legal to own ,as all loon species are native to north america.
Also fish eating birds REAK like fish. If you ever should wish to smell a loon, don't. They smell bad.