Any time the feeder receives a signal through the cloudBit, the servo is activated. In our case, we attached a fish food container with a small hole drilled in its side to the servo. When the servo turns, a few pellets drop out of the container and into the bowl.
You can activate the servo remotely in a couple different ways. You can either use the littleBits button in Cloud Control to send a single pulse to the cloudBit, activating the servo. Or, you could use an IFTTT channel, like Date & Time to automate the feeding at times you set.