Others have answered your questions. I can see how excited you are and understand it because I waited 25 years to be able to have my flock. I do want to prepare you mentally for possibly losing them to predators. Everything from dogs and cats, to raccoons, Foxes, and mink easily kill domestic ducks. Few make it longer than 3 months free ranging. It's shocking to find them slaughtered, and it is preventable. They make walk in movable pens in kits. The kits need to be beefed up with 1/2" hardware cloth and heavy duty zip ties, but they can be good protection from hawks and owls, and moderate protection from ground predators. We have them and are able to place them in very open areas with several hundred feet of cut grass around them. Predators dislike crossing large open spaces, so it helps to deter them. The other option is to use electric netting. Both allow you to move them so they always have fresh grass. Jut wanted you to know some possible options to offer protection to them that you may not know about. Whatever you do, do not use chicken wire! Predators slice through it in 10 seconds. It keeps birds IN but keeps nothing out.
This is the type of kit I'm referring to: https://www.amazon.com/dp/B095Y34KH...colid=1IQZ0M1B8R8NC&ref_=lv_ov_lig_dp_it&th=1 This about the biggest size you can move alone. You want to have about 6-8 spots to move it to, to save your grass. If you have another person to help you, you can go with the next size bigger, but honestly for 2 ducks, the smaller size is fine.
Hope this helps...
This is the type of kit I'm referring to: https://www.amazon.com/dp/B095Y34KH...colid=1IQZ0M1B8R8NC&ref_=lv_ov_lig_dp_it&th=1 This about the biggest size you can move alone. You want to have about 6-8 spots to move it to, to save your grass. If you have another person to help you, you can go with the next size bigger, but honestly for 2 ducks, the smaller size is fine.
Hope this helps...