A mourning dove feeds her squabs in their nest in Pasadena, California, U.S., September 1, 2020. REUTERS/Mario Anzuoni

White House staff listen as U.S. President Donald Trump speaks to delegates in the Charlotte Convention Center's Richardson Ballroom, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump applauds after speaking to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

A crowd mingles at the conclusion of U.S President Donald Trump’s speech to delegates in the Charlotte Convention Center's Richardson Ballroom, where delegates have gathered for the roll call vote to renominate Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump and Vice President Pence applaud in the Charlotte Convention Center's Richardson Ballroom, where delegates have gathered for the roll call vote to renominate Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump greets delegates with Vice President Pence in the Charlotte Convention Center's Richardson Ballroom, where delegates have gathered for the roll call vote to renominate Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump greets delegates with Vice President Pence in the Charlotte Convention Center's Richardson Ballroom, where delegates have gathered for the roll call vote to renominate Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump speaks to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump arrives to speak to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump speaks to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump speaks to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump speaks to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

U.S. President Donald Trump speaks to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Vice President Mike Pence speaks to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, where delegates have gathered for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Vice President Mike Pence speaks to delegates in the Charlotte Convention Center's Richardson Ballroom in Charlotte, where delegates have gathered for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Vice President Mike Pence applauds in the Charlotte Convention Center's Richardson Ballroom in Charlotte, where delegates have gathered for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Delegates participate in the Charlotte Convention Center's Richardson Ballroom in Charlotte, during the roll call to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Delegates begin to cast their votes in the Charlotte Convention Center's Richardson Ballroom in Charlotte, during the roll call to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President is opened, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

RNC Chairwoman Ronna Romney McDaniel speaks to delegates in the Charlotte Convention Center’s Richardson Ballroom in Charlotte, where delegates have gathered for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

RNC Chairwoman Ronna Romney McDaniel speaks to delegates in the Charlotte Convention Center’s Richardson Ballroom in Charlotte, where delegates have gathered for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Delegates gather in the Charlotte Convention Center's Richardson Ballroom, for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Delegates applaud in the Charlotte Convention Center's Richardson Ballroom, where they have gathered for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Delegates gather in the Charlotte Convention Center's Richardson Ballroom, for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

Delegates gather in the Charlotte Convention Center's Richardson Ballroom, for the roll call vote to renominate Donald J. Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

The Charlotte Convention Center is set for delegates to gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

An social distancing sign stands outside the Charlotte Convention Center’s Richardson Ballroom, where delegates gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

A social distancing sign marks the floor outside the Charlotte Convention Center’s Richardson Ballroom, where delegates gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

An RNC sign glows outside the Charlotte Convention Center’s Richardson Ballroom where delegates gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

The Charlotte Convention Center is set for delegates to gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

A delegate is seen at the Charlotte Convention Center before the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

The Charlotte Convention Center is set for delegates to gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

The Charlotte Convention Center is set for delegates to gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

The Charlotte Convention Center is set for delegates to gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

The Charlotte Convention Center is set for delegates to gather for the roll call vote to renominate Donald Trump to be President of the United States and Mike Pence to be Vice President, in Charlotte, North Carolina, U.S., August 24, 2020. Travis Dove/Pool via REUTERS

People release doves to symbolise peace at Yasukuni Shrine on the 75th anniversary of Japan's surrender in World War Two, amid the coronavirus disease (COVID-19) pandemic, in Tokyo, Japan August 15, 2020. REUTERS/Kim Kyung-Hoon

Michael Brown Sr. and his family releases white doves as they mark six years since 18-year-old Michael Brown Jr. was shot dead by the police in Ferguson, Missouri, U.S., August 9, 2020. REUTERS/Lawrence Bryant

Michael Brown Sr. releases a pink dove as the family marks six years since 18-year-old Michael Brown Jr. was shot dead by the police in Ferguson, Missouri, U.S., August 9, 2020. REUTERS/Lawrence Bryant

Mourners release doves in a memorial in the name of Regis Korchinski-Paquet, a Black and Indigenous woman who fell to her death on May 27, 2020 from a balcony as police were present in the apartment, in Toronto, Ontario, Canada July 25, 2020. REUTERS/Chris Helgren

Mourners release doves in a memorial in the name of Regis Korchinski-Paquet, a Black and Indigenous woman who fell to her death on May 27, 2020, from a balcony as police were present in the apartment, in Toronto, Ontario, Canada July 25, 2020. REUTERS/Chris Helgren

Mourners release doves in a memorial in the name of Regis Korchinski-Paquet, a Black and Indigenous woman who fell to her death on May 27, 2020, from a balcony as police were present in the apartment, in Toronto, Ontario, Canada July 25, 2020. REUTERS/Chris Helgren

A dove is seen during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

A dove is released during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji

Doves are released during a ceremony commemorating the 70th anniversary of the Korean War, near the demilitarized zone separating the two Koreas, in Cheorwon, South Korea, June 25, 2020. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY

Opera singers Flurina Stucki, Karis Tucker, Annika Schlicht wait for their performance during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singers Flurina Stucki, Karis Tucker, Annika Schlicht wait for their performance during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singer Annika Schlicht performs during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singer Judit Kutasi wears a face mask as she performs during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singer Karis Tucker wears a face mask as she waits for her performance during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singer Karis Tucker (R) wears a face mask as she performs with Judit Kutasi and Irene Roberts during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singers perform during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singer, Tobias Kehrer, walks past unoccupied, white wrapped seats during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singers perform during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Unoccupied, white wrapped seats are pictured during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singers perform during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera director, Dietmar Schwarz, poses beside a statue of German composer Richard Wagner before the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera singers perform during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

A statue of German composer Richard Wagner is covered with a face mask during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

A statue of German composer Richard Wagner is covered with a face mask during the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

Opera director, Dietmar Schwarz, is pictured before the dress rehearsal of Richard Wagner's Das Rheingold (The Rhinegold) in a semi-scenic performance by Jonathan Dove on the parking deck of Deutsche Oper opera house, which claims it to be the first performance of an opera since the easing of the measures after lockdown, amid the coronavirus disease (COVID-19) outbreak in Berlin, Germany, June 9, 2020. REUTERS/Fabrizio Bensch

People walk on rocks to cross the River Dove in Dovedale in the Peak District, following the outbreak of the coronavirus disease (COVID-19), Ashbourne, Britain, May 16, 2020. REUTERS/Carl Recine