Back in the [common room], the [Gryffindors] throw a party for Harry, highlighted by Harry's first attempt at opening his egg and Neville briefly turning into a canary. Hermione also cunningly learns from Fred how to get into the [Hogwarts] [kitchens], and finally Harry goes to bed, happy with the way his day has turned out.
December begins with a [Care of Magical Creatures] class that doesn't go very well as the students try unsuccessfully to see whether Blast-Ended Skrewts hibernate. The poor class is punctuated when Rita Skeeter arrives, asking to do a story on Hagrid and his creatures.
Down in the Kitchens
Ron and Harry are searching for Hermione when she comes rushing up and drags them to the [kitchens]. There, as it turns out, they find Dobby, who is thrilled to see Harry again. However they also find Winky, who is absolutely miserable. Finally they turn to go, loaded with free food from the house-elves.
Chapter 22 - "The Unexpected Task" - In which the Yule Ball is announced, and Harry learns that he is expected to have a dance partner. Harry tries to get up the nerve to ask Cho to the dance, but when he finally does finds that she already has a date with Cedric, so Harry arranges to go with Parvati Patil instead.
The Yule Ball is Announced
At the end of [Transfiguration] one day, McGonagall tells the students of the upcoming Yule Ball. She then makes Harry even more nervous, holding him back after class to let him know that he not only needs a date, but needs to begin the dancing.