A lot of people think this sounds nice when they first think about it, but in reality, skylights are going to cause heat problems (in summer) in southern climates, and heat-loss and condensation-drip problems (in winter) in northern climates. Also which they tend to leak around the edges no matter whatcha do, later if not sooner.
A MUCH easier and more leakproof and less thermally-problematic solution is just to have real nice big windows. If they can open for ventilation you get that extra benefit too. And you'll get just as much maximize-light-in-wintertime egg-laying benefit as you would from a skylight.
Sorry, JMO,
Pat