As migrating warblers moved through Duluth last week, Will Stenberg took this photo of a Palm Warbler drinking sap from a Yellow-bellied Sapsucker's well. Sapsuckers drill wells, often in large numbers of rows, to draw sap. The birds eat the plant tissue, and drink the sap. They also eat the insects attracted to the leaking liquid. Yellow-bellied Sapsuckers are one of four North American members of that family. The warbler might have been thirsty, might have liked the flavor. Very nIce photo. Thanks for sharing, Will.
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