Olivaceous Woodcreeper vs Plain-winged Woodcreeper

In short

The Olivaceous Woodcreeper and Plain-winged Woodcreeper are both small, brown woodcreepers, but they can be distinguished by their structure and vocalizations. The Olivaceous Woodcreeper typically has a more slender bill and a slightly more olive tone, while the Plain-winged Woodcreeper has a plainer appearance with no streaking or supercilium.

Identification tips

1. Look for the slender bill of the Olivaceous Woodcreeper. 2. Note the uniform brown plumage of the Plain-winged Woodcreeper, lacking streaks or supercilium. 3. Listen for the trilled or whistled song of the Olivaceous Woodcreeper. 4. Consider the geographic location; Olivaceous is more widespread, while Plain-winged is more restricted to the Atlantic Forest.

Size

Both species are similar in size, but the Olivaceous Woodcreeper may appear slightly more slender due to its finer bill.

Plumage

The Olivaceous Woodcreeper often shows a subtle olive tone and may have faint streaking on the throat, whereas the Plain-winged Woodcreeper is more uniformly brown with no streaking or supercilium.

Behaviour

Both species forage by climbing tree trunks and branches, but specific behavioral differences are not well-documented.

Habitat

Both species inhabit tropical forests, but the Olivaceous Woodcreeper has a broader range across South America, while the Plain-winged Woodcreeper is more localized to the Atlantic Forest.

Voice

The Olivaceous Woodcreeper has a geographically variable song, often a trill or series of whistles, while the Plain-winged Woodcreeper's vocalizations are less documented but generally simpler.