Tuesday, October 14, 2014
A Sap Lick in the Back Basin
Matt and I have seen sapsuckers before, but we'd not seen a sap lick until earlier this year. We found one along the boardwalk in the back basin at Norris in Yellowstone National Park. The sapsuckers chisel out rectangular notches in the bark in long and strikingly even columns. These notches ooze sap which the sapsuckers eat. They also eat insects that are attracted to and then caught in the sap. What a brilliant system!