Summer Bird (April 7, 2006 – December 23, 2013) was a champion American Thoroughbred racehorse, son of 2004 Belmont Stakes winner Birdstone.

Triple Crown, in which Kentucky Derby winner and Preakness Stakes runner-up Mine That Bird was favored.

Both horses were taken out of the race, though, Mine That Bird because of throat surgery and Rachel Alexandra because she was entered in the Woodward Stakes against older males the week after the Travers.

Summer Bird took the lead in the Travers over Kensei at the quarter pole and held off a late closing longshot, Hold Me Back, to win and earn his second Grade 1 victory on a sloppy track.

He then finished fourth in the Breeders' Cup Classic behind champion mare Zenyatta at Santa Anita Park on November 7, 2009, as the third betting choice at 6–1.

[2] Summer Bird was retired to stud in 2011 and initially stood at Pauls Mill in Versailles, Kentucky, for a fee of $15,000.