Middle Grade Fantasy

 The Hidden Kingdom  by Tui T. Sutherland 

I started reading this series to see if my nephew would like it. I think he's a little too old for it now, but it is definitely something I would recommend. This is fast paced and action packed. The dragons of destiny are now on their way to the kingdom of the RainWings so Glory can find her parents. But when they get there they discover that many of the negative stereotypes are correct and that nobody knows who their parents are because they put their eggs in the same place. Glory does realize that an afternoon nap in the sun helps to recharge her and she doesn't need to eat as much because of the energy from the sun. They also learn that at least 12 dragons have gone missing and hardly anybody notices or cares. They have a queen rotation; anyone that wants to be queen can be queen for a month. They find out that there is some kind of monster killing dragons; turns out it's the NightWings; they have a hidden kingdom underground in RainWing territory. They travel to the IceWings and meet one of the queen candidates, but while she is kind she is also vapid. Glory challenges the current queen for the throne and there is a contest; they are tied 2-2 and one of the new friends Glory made gets injured during the final challenge. Glory and the oldest queen discover they are related and she, who is the rightful queen concedes the challenge and the throne to Glory so she can make plans to rescue the missing dragons. But, they find out that one of the dragons of destiny is gone and that's where the book ends. What I like about this series is that while it might end on a cliffhanger it also wraps up each individual story while keeping you interested in what happens next.