Scientific name: Certhia familiaris
Size: Approx 13cm
Distribution: Found throughout the UK
Months seen: All year round
Habitat: Parks and woodland
Special features: Treecreepers are so called because they are usually seen walking up the trunks of trees, hunting for small insects in the bark.
When they're feeding they generally spiral up one tree in a jerky fashion, before jumping to the base of the next tree and then spiral up that one (see clip). If you see a bird going the opposite way, i.e. walking head first down a tree trunk, that will most likely be a nuthatch.
The beak of the Treecreeper is quite long and thin, and downward curving. The plumage is mainly dappled brown above and white on the underparts.
Treecreepers frequently nest in cracks in trees