Add to Lightbox
Fly feeding on sap running from hole recently drilled in bark of Red Maple (Acer rubrum) by Yellow-bellied Sapsucker (Sphyrapicus varius). Various other animals also feed on such sap.
Gerry Bishop/Visuals Unlimited, Inc.
all images © Visuals Unlimited
Visuals Unlimited, Inc. specializes in, microscopy, healthcare, medical, wildlife, underwater, agriculture, and science stock photography.