Ten thousands birds were slaughtered in France last week after one of them was discovered to be carrying avian flu.
It is the first time the the highly contagious virus, also known as bird flu, has been discovered in Ile-de-France, in the north of the country.
The authorities have said this is "an isolated case" and there was no need for other breeders to panic, although a precautionary hunting ban has been put in place.
The farm where the infected bird was discovered will undergo heavy disinfection before reopening in a few months.
Bird Flu is a viral illness afflicting several species of bird which can, in rare cases, infect humans and has led to deaths.
The last reported UK case of the H5N1 strain of the virus was in 2008.