No, a 9V battery will damage your Hummingbird. The maximum voltage you should use with your Hummingbird is 7V. Any power supply for Hummingbird should have a voltage between 4.5V and 7V and a current rating of at least 1 amp (2 amps if you intend to run 3 or more servos).
You can purchase a battery pack or a power adapter for the Hummingbird Robotics Kit.
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