Beekeeper Xavier Rennotte, the owner of Nectar & Co, shows a bee next to a honeycomb at an apiary, during the outbreak of the coronavirus disease (COVID-19) in Brussels, Belgium May 8, 2020. REUTERS/Johanna Geron

Bees fly into a hive at an apiary, during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020.REUTERS/Johanna Geron

Bees are seen on a honeycomb at an apiary, during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020. REUTERS/Johanna Geron

Bees fly into a hive at an apiary during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020. REUTERS/Johanna Geron

Bees are seen on a honeycomb at an apiary, during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020.REUTERS/Johanna Geron

Bees are seen on a honeycomb at an apiary, during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020.REUTERS/Johanna Geron

Beekeeper Xavier Rennotte, the owner of Nectar & Co, puts bees in a beehive, during the outbreak of the coronavirus disease (COVID-19) in Brussels, Belgium May 8, 2020.REUTERS/Johanna Geron

Bees are seen on a honeycomb at an apiary, during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020.REUTERS/Johanna Geron

Bees are seen on a honeycomb at an apiary, during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020.REUTERS/Johanna Geron

Bees are seen on a honeycomb at an apiary, during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020. REUTERS/Johanna Geron

Bees are seen on a honeycomb at an apiary, during the outbreak of the coronavirus disease (COVID-19), in Brussels, Belgium May 8, 2020. REUTERS/Johanna Geron

Beekeeper Xavier Rennotte, the owner of Nectar & Co, puts bees in a beehive, during the outbreak of the coronavirus disease (COVID-19) in Brussels, Belgium May 8, 2020.REUTERS/Johanna Geron

Bees are seen on a honeycomb at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Bees are seen at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

A queen bee is seen on a honeycomb at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Bees are seen on a honeycomb at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Beekeepers look at bee frames at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Beekeepers look at bee frames at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Beekeepers look at bee frames at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Bees are seen at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Beekeepers look at bee frames at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Men in beekeeper's outfits stand near beehives at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Bees are seen at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Bees are seen at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Beekeeper Pablo Alvarez prepares a bee smoker at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Bees are seen on a beekeeper's finger at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Bees are seen at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Bees are seen at an apiary, in Casablanca, Chile October 4, 2019. Picture taken October 4, 2019. REUTERS/Rodrigo Garrido

Beekeeper Pyotr Goloburdo, aged 67, works at his private apiary outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

Bees return from a meadow to a beehive at a private apiary of beekeeper Pyotr Goloburdo outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

A view shows bees on a honeycomb section at a private apiary of beekeeper Pyotr Goloburdo outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

A view shows bees on a honeycomb section at a private apiary of beekeeper Pyotr Goloburdo outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

Beekeeper Pyotr Goloburdo, aged 67, works at his private apiary outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

Beekeeper Pyotr Goloburdo, aged 67, holds a honeycomb section while working at his private apiary outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

Bees return from a meadow to a beehive at a private apiary of beekeeper Pyotr Goloburdo outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

Beekeeper Pyotr Goloburdo, aged 67, holds a honeycomb section while working at his private apiary outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

Beekeeper Pyotr Goloburdo, aged 67, works at his private apiary outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

Beekeeper Pyotr Goloburdo, aged 67, holds a honeycomb section while working at his private apiary outside the remote Siberian village of Volny near Krasnoyarsk, Russia August 28, 2019. Picture taken August 28, 2019. REUTERS/Ilya Naymushin

Bees are seen on a honeycomb section of a bee hive on the rooftop of the Mandarin Oriental Hotel in Paris, France, September 25, 2018. Picture taken September 25, 2018. REUTERS/Philippe Wojazer

Bees are seen on a honeycomb section of a bee hive on the rooftop of the Mandarin Oriental Hotel in Paris, France, September 25, 2018. Picture taken September 25, 2018. REUTERS/Philippe Wojazer

Bees are seen on a honeycomb section of a bee hive on the rooftop of the Monnaie de Paris in Paris, France, September 26, 2018. Picture taken September 26, 2018. REUTERS/Benoit Tessier

Bees are seen on a honeycomb section of a bee hive on the rooftop of the Mandarin Oriental Hotel in Paris, France, September 25, 2018. Picture taken September 25, 2018. REUTERS/Philippe Wojazer

A swarm of bees land on a hot dog cart in Times Square in New York City, U.S., August 28, 2018. REUTERS/Brendan McDermid

A swarm of bees land on a hot dog cart in Times Square in New York City, U.S., August 28, 2018. REUTERS/Brendan McDermid

Natural honey flows through a sieve at the apiculture company Zuerihonig in Oberengstringen, Switzerland August 7, 2018. Picture taken August 7, 2018. REUTERS/Arnd Wiegmann

Natural honey flows out of an extractor into a sieve at the apiculture company Zuerihonig apiculture in Oberengstringen, Switzerland August 7, 2018. Picture taken August 7, 2018. REUTERS/Arnd Wiegmann

Natural honey flows out of an extractor into a sieve at at the apiculture company Zuerihonig in Oberengstringen, Switzerland August 7, 2018. Picture taken August 7, 2018. REUTERS/Arnd Wiegmann

Natural honey flows out of an extractor into a sieve at the apiculture company Zuerihonig in Oberengstringen, Switzerland August 7, 2018. Picture taken August 7, 2018. REUTERS/Arnd Wiegmann

Natural honey flows out of an extractor at the apiculture company Zuerihonig in Oberengstringen, Switzerland August 7, 2018. Picture taken August 7, 2018. REUTERS/Arnd Wiegmann

Honeycombs are extracted at the apiculture company Zuerihonig in Oberengstringen, Switzerland August 7, 2018. Picture taken August 7, 2018. REUTERS/Arnd Wiegmann

Honeycombs are placed in an extractor at the apiculture company Zuerihonig in Oberengstringen, Switzerland August 7, 2018. Picture taken August 7, 2018. REUTERS/Arnd Wiegmann

Bees are seen on a honeycomb of the apiculture company Zuerihonig in Oberengstringen, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann

Bees are seen on a honeycomb of the apiculture company Zuerihonig in Oberengstringen, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann

A bee queen, marked with a 4, is seen on a honeycomb of apiculture company Zuerihonig in Oberengstringen, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann

Bees are seen on a honeycomb section of a bee hive of apiculture company Zuerihonig in Oberengstringen, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann

Beekeeper Peter Schneider from apiculture company Zuerihonig holds a bee queen marked with a 6 in Oberengstringen, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann

A bee queen marked with a 6 is seen in a hive of apiculture company Zuerihonig in Oberengstringen, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann

Bees are seen in front of bee hives of apiculture company Zuerihonig on the roof of the Marriott Hotel in Zurich, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann

Bees are seen in front of bee hives of apiculture company Zuerihonig on the roof of the Marriot Hotel in Zurich, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann

Bees are seen in front of a hive of apiculture company Zuerihonig on the roof of the Globus department store in Zurich, Switzerland August 21, 2018. Picture taken August 21, 2018. REUTERS/Arnd Wiegmann