Protective gloves and scissors used by temporary workers during harvest are seen along white wine grapes in Moradillo de Roa, central Spain, October 2, 2018. Picture taken October 2, 2018. REUTERS/Sergio Perez 

Collected grapes are seen with a pair of secateur in a box at the Domaine Pinson vineyard during the Chablis wine harvest in Chablis, France, September 5, 2017. REUTERS/Christian Hartmann 

Collected grapes are seen with a pair of secateur in a box at the Domaine Pinson vineyard during the Chablis wine harvest in Chablis, France, September 5, 2017. REUTERS/Christian Hartmann 

Sibylle, biotechnology engineering student, collects Orgeval yellow courgettes from the vegetable kitchen garden installed on the roof of La Mutualite building in Paris July 23, 2013. This rooftop urban vegetable patch is managed by Sibylle for the French Chef Eric Castandet to supply fresh seasonal produce to the restaurant 'Terroir Parisien' on the ground floor of the building. Currently emerging in French cities, green spaces have sprouted on the flat roofs of towns all over the world as part of the growing trend for urban agriculture in line with increased concern about the origins of our food. Picture taken July 23, 2013. REUTERS/Philippe Wojazer (FRANCE - Tags: ENVIRONMENT) 

A chicken is prepared for sale by staff at a poultry farm in Pompignac, near Bordeaux, southwestern France, February 21, 2006. France confirmed on Saturday it had found the deadly H5N1 bird flu strain in a wild duck, the first case of the virus in Europe's biggest poultry producer. REUTERS/Regis Duvignau FR060021 

A grape-picker cuts a bunch of Sangiovese grapes during the harvest at the Biondi Santi vineyard in the Val d'Orcia close to the Tuscan town of Montalcino in central Italy, September 22, 2004. The grapes are used in the production of the famous Brunello di Montalcino wine. REUTERS/Max Rossi MR/SN