What feature is common in a baggie feeder placed directly on top of the frames?

A baggie feeder, which is often used in beekeeping to provide sugar syrup to bees, typically features slits along its top when it is placed directly on top of the frames. The function of these slits is to allow the bees easy access to the syrup while also reducing the risk of drowning, as they can climb up through the slits to feed.

The design helps in controlling the flow of syrup, enabling it to stay in the feeder until the bees consume it instead of spilling out uncontrollably. This makes slits a practical and efficient choice for a baggie feeder used in such an application, supporting the feeding behavior of bees effectively.

Other features such as holes, panels, or grids may serve different purposes or configurations in various types of feeders, but they are not typically associated with the efficacy of a baggie feeder used directly on top of frames in the same way that slits are.