Common Pochard, Aythya ferina, is a species of diving duck found in wetland, river and lake and marine inlet and transitional water ecosystems. It is a widespread breeder across much of Europe. This species requires well-vegetated eutrophic to neutral swamps, marshes, lakes and slow-flowing rivers with areas of open water and abundant emergent fringing vegetation. It also breeds on saline, brackish and soda lakes and occasionally even in sheltered coastal bays (European Red List 2015).

Aythya ferina has a breeding population size of 85300-127000 pairs and a breeding range size of 918000 square kilometres in the EU27. The breeding population trend in the EU27 is Decreasing in the short term and Decreasing in the long term. Aythya ferina has a winter population size of 380000-594000 individuals in the EU27. The winter population trend in the EU27 is Decreasing in the short term and Decreasing in the long term.

The EU population status of Aythya ferina was assessed as Threatened, as the species meets one or more of the IUCN Red List criteria for threatened at the EU27 scale.