puukiipijä Certhia familiaris

An inconspicuous little bird (plumage blends well with bark) of woods, forests, and gardens with larger trees. Usually seen as singles or pairs, creeping along trunks and branches using its tail for support, like a mini-woodpecker. Probes in crevices for insects and spiders, and often spirals up then drops to low on the next tree and spirals up again. In areas where Short-toed Treecreeper also occurs, the two species are often not safely distinguished without considerable experience; look for “uneven steps” on the wing, whiter sides, and slightly shorter bill. Listen for high, thin “tseee”s and trills. Song is a lovely series of falling whistles, typically preceded by short trills and concluded with a flourishing rising whistle.