The pygmy woodpecker's beak is hard and sharp, and serves both to carve out homes in tree trunks and to dig up insects that have burrowed underneath tree bark.
小啄木鳥的嘴巴堅硬而銳利，除以嘴巴鑿樹洞為家，牠們也將尾巴抵住樹幹，再以尖嘴快速敲打樹皮，啄食樹中的昆蟲。