In a run-of-the-mill ""Redfeather"" book, a second grader has a nearly disastrous seventh birthday. Cory is apprehensive: his mother has made him invite the class bully to his skating party; moreover, he has already peeked at his birthday present--and broken it. On the day itself, the reality is as uncomfortable as Cory has expected--until the results of his revenge on Delphinius (Cory calls him ""Dumbphinius"") reveal that Cory's teasing has had a lot to do with making his classmate a bully. Home again, Cory discovers that his mother was aware of his snooping and has provided new batteries for his ""Monster Wheels."" Meanwhile, Cory resolves to start helping Delphinius instead of harassing him. Though the story is predictable and moralistic, and seems too difficult for second graders and of little interest to older readers, Brimner does have a good fix on grade-school emotions and dialogue. Still, a modest effort at best.