Eurasian Treecreeper, Certhia familiaris, is a species of passerine bird in the treecreeper family found in woodland and forest ecosystems. It is a widespread breeder across much of Europe, but patchily distributed in the South-West. This species inhabits forest and woodland, generally requiring well-grown trees with many cracks and crevices in the bark for foraging, roosting and nesting. It tends to favour older stands of spruce (Picea), but habitat preferences are complex and apparently affected by presence or absence of Certhia brachydactyla (European Red List 2015).

Certhia familiaris has a breeding population size of 2790000-5460000 pairs and a breeding range size of 2240000 square kilometres in the EU27. The breeding population trend in the EU27 is Stable in the short term and Stable in the long term.

The EU population status of Certhia familiaris was assessed as Secure, because the species does not meet any of the IUCN Red List criteria for threatened or Near Threatened, or the criteria for Depleted or Declining (the EU27 population or range has not declined by 20% or more since 1980).