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Between 2004 and 2015, the quantity of duck foie gras produced yearly in France remained stable, around 35 million heads, with slight increases and decreases. However, the production dropped after 2015 and reached its lowest in 2017 at around 21.3 million heads.
In 2015, an avian flu epidemic (H5N1) hit France, while many ducks and goose were affected, this strand of the virus was particularly dangerous to chicken. However, between 2016 and 2017, the H5N8 virus, another variation of the bird flu, spread across the country. This strand of the virus was deadly to both ducks and goose, and, as a result, millions were euthanized.
Since 2017, the volume produced increased slightly before dropping again in 2020, when another avian flu epidemic broke out.