When you befriend the Duck it can drop a duck feather sometimes but it really isnt profitable. The basic barn allows you to raise cows. Once you’ve built a silo, you have a chance of getting hay from cutting down grass you should wait to clear your farm from grass until you have a silo. It depends on what you want to focus on and less of your play style. TBH none of the animals are really worth going all out on, I’d take a variety for the sake of completion but focus on crops. The rich text editor does not work with JavaScript switched off.