FIELD GUIDE TO INSECTS AND DISEASES OF ARIZONA AND NEW MEXICO FORESTS
Sapsucker
Figure 302. Figure 302. Sapsuckers drill parallel rows of holes and feed on sap and insects caught in the sap.

Sapsuckers feed primarily on the sap of trees, moving among different trees and tree species on a seasonal basis. Insects are attracted to the sweet sap exuding from sap holes and are often captured and fed to young sapsuckers during the breeding season. When feeding, sapsuckers puncture the bark in horizontal lines around tree limbs or main stems. These punctures sometimes serve as entry points for stain or decay fungi. Intensive feeding by sapsuckers sometimes results in severe tree damage and mortality, even to large ponderosa pines.