Hazel Grouse, Bonasa bonasia, is a species of gamebird found in woodland and forest ecosystems. It is a widespread resident in northern Europe, but occurs more patchily farther south. The species is found in mixed coniferous deciduous woodland, both in plains and mountains. It seems to avoid pure coniferous stands and occurs in areas without conifers. It generally prefers large, dense forests with rich, varied undergrowth (up to c. 2 m tall) and occasional clearings (European Red List 2015).

Bonasa bonasia has a breeding population size of 663000-912000 pairs and a breeding range size of 1230000 square kilometres in the EU27. The breeding population trend in the EU27 is Stable in the short term and Decreasing in the long term.

The EU population status of Bonasa bonasia 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).