Yes, and it is worth it but difficult. Pheasant skin, for example, is very thin compared to duck skin and can rip. I have had some success by melting wax in hot water, dipping the bird by the head into the wax/water, cooling it off then plucking the bird that way. You'll need to pluck the biggest feathers out first, by the way.
Never done a quail.
I love all of God's creatures, properly prepared.