Bovina

Bovina is a character. She will give Banjo a Jiggy if he kills all the flies. In her area, there's also an Empty Honeycomb Piece in a cliff above her 'house'. To grab it, you are most likely intended to use the Grip Grab, but you can also fly there by means of the flight pad (that you open using the Bill Drill) near the world entrance.

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