Assertion: downy woodpecker | /r/HasProperty | perched on the sides of trees
Facets:
Source sentences:
text: They feature blocky heads, familiar black and white plumage, and share the same straight-backed posture when perched on the sides of trees.
text: They have the same silhouette as larger woodpeckers; blocky heads and straight posture when perched on the sides of trees — but with proportionately smaller, chisel-like bills.