downy woodpecker

downy-woodpecker的词性：
n.（名词）

1. A black and white North American woodpecker (Picoides pubescens) having a solid white back and a small bill.
绒啄木鸟：一种具黑白二色的北美（绒啄木 三趾啄木鸟属） 啄木鸟，背白而坚，喙小