Aquila, the eagle:

An ancient constellation whose bright star Altair marks one third of the asterism known as the "Summer Triangle". Aquila is the eagle that was the symbol of the ancient god Zeus. Aquila was known to carry Zeus's thunderbolts, and was sent to bring the youth Ganymede to Olympus to serve as cupbearer to the gods (see Aquarius). The stars of Aquila are very bright and easy to spot throughout the summer and well into the fall.