Whooper swans gather on the frozen surface of Lake Sorbulak in the Almaty Region, Kazakhstan December 24, 2022. REUTERS/Pavel Mikheyev 

A flock of white American pelicans rest during their winter migration from the United States and Canada, at the Bosque de San Juan de Aragon in Mexico City, Mexico December 14, 2022. REUTERS/Raquel Cunha 

A flock of white American pelicans fly over the Bosque de San Juan de Aragon, during their winter migration from the United States and Canada, in Mexico City, Mexico December 14, 2022. REUTERS/Raquel Cunha 

A white American pelican flies over a lake during its winter migration from the United States and Canada, at the Bosque de San Juan de Aragon in Mexico City, Mexico December 14, 2022. REUTERS/Raquel Cunha 

A flock of white American pelicans rest during their winter migration from the United States and Canada, at the Bosque de San Juan de Aragon in Mexico City, Mexico December 14, 2022. REUTERS/Raquel Cunha 

Birds walk through the snow as cold weather continues, in London, Britain, December 12, 2022. REUTERS/Toby Melville 

Birds walk through the snow as cold weather continues, in London, Britain, December 12, 2022. REUTERS/Toby Melville 

Geese run out of their pen at a goose farm in Wittichenau, Germany, November 24, 2022. REUTERS/Matthias Rietschel 

Geese run through their enclosure at a goose farm in Wittichenau, Germany, November 24, 2022. REUTERS/Matthias Rietschel 

Geese run through their enclosure at a goose farm in Wittichenau, Germany, November 24, 2022. REUTERS/Matthias Rietschel TPX IMAGES OF THE DAY 

Geese run through their enclosure at a goose farm in Wittichenau, Germany, November 24, 2022. REUTERS/Matthias Rietschel 

Swans are seen at Hamburg's inner city lake Alster as Olaf Niess and his team caught them to bring them to their winter quarters in Hamburg, Germany, November 22, 2022. REUTERS/Fabian Bimmer 

A mallard drake swims in Loch Faskally near Pitlochry, Scotland, Britain November 2, 2022. REUTERS/Russell Cheyne 

A mallard duck swims on Loch Faskally near Pitlochry, Scotland, Britain, October 26, 2022. REUTERS/Russell Cheyne 

Mallard ducks swim on Loch Faskally near Pitlochry, Scotland, Britain, October 26, 2022. REUTERS/Russell Cheyne 

A western gull picks at the carcass of a dead fish floating in Lake Merritt in Oakland, California, U.S., August 30, 2022. REUTERS/Nathan Frandino 

A grey goose walks in almost dried up Lake Zicksee near Sankt Andrae, as another heatwave is predicted for parts of the country, in Austria, August 12, 2022. REUTERS/Leonhard Foeger 

A recently hatched American Coot chick sits in a nest in the Willard Spur Waterfowl Management Area near Willard, in Utah, U.S., June 29, 2022. REUTERS/Nathan Frandino 

An adult American Avocet flies in the Willard Spur Waterfowl Management Area near Willard, in Utah, U.S., June 29, 2022. REUTERS/Nathan Frandino 

Max Malmquist, an outreach associate with the Saline Lakes Program of the National Audubon Society, looks on from an airboat in the Willard Spur Waterfowl Management Area near Willard, in Utah, U.S., June 29, 2022. REUTERS/Nathan Frandino 

Shags are seen in the water off the island of Annet, in the Isles of Scilly, Britain, May 2, 2022. REUTERS/Tom Nicholson 

A wintering Bald Eagle perches atop an ice flow on the Hudson River near Newburgh, New York, U.S., January 31, 2022. REUTERS/Mike Segar 

Brown pelicans fly past people out on the ocean during outbreak of the coronavirus disease (COVID-19) in Encinitas, California, U.S., March 29, 2021. REUTERS/Mike Blake 

A Canada goose walks along the bed of the River Thames during low tide in East London, Britain, April 27, 2020. REUTERS/Steven Watt 

Ducks walk freely in the streets during the spread of the coronavirus disease (COVID-19) that have reduced the presence of people, in Venice, Italy, April 27, 2020. REUTERS/Manuel Silvestri 

Ducks walk freely in the streets during the spread of the coronavirus disease (COVID-19) that have reduced the presence of people, in Venice, Italy, April 27, 2020. REUTERS/Manuel Silvestri 

Ducks walk freely in the streets during the spread of the coronavirus disease (COVID-19) that have reduced the presence of people, in Venice, Italy, April 27, 2020. REUTERS/Manuel Silvestri 

Ducks walk freely in the streets during the spread of the coronavirus disease (COVID-19) that have reduced the presence of people, in Venice, Italy, April 27, 2020. REUTERS/Manuel Silvestri 

Whooper swans fly in a forest near the village of Zhukovka, Belarus April 21, 2020. REUTERS/Vasily Fedosenko 

A general view shows birds on Furzton Lake during sunrise as the spread of the coronavirus disease (COVID-19) continues, in Milton Keynes, Britain April 21, 2020. REUTERS/Andrew Boyers 

A general view of the sunrise over Furzton Lake as the spread of the coronavirus disease (COVID-19) continues, in Milton Keynes, Britain April 21, 2020. REUTERS/Andrew Boyers 

Swans are seen with a submerged bike in a river in Witney, as the spread of the coronavirus disease (COVID-19) continues, Witney, Britain, April 20, 2020. REUTERS/Eddie Keogh TPX IMAGES OF THE DAY 

A swan is seen with a submerged bike in a river in Witney, as the spread of the coronavirus disease (COVID-19) continues, Witney, Britain, April 20, 2020. REUTERS/Eddie Keogh 

Ducks swim in a pond, during a countrywide lockdown to combat the spread of the coronavirus disease (COVID-19), in the village of Houla, southern Lebanon April 13, 2020. REUTERS/Aziz Taher 

A Swan swims on the Seddinsee during a sunny day outside Berlin, Germany, April 6, 2020. REUTERS/Michael Dalder 

Swans swim on the Seddinsee during a sunny day outside Berlin, Germany, April 6, 2020. REUTERS/Pawel Kopczynski 

Mallards are seen during the outbreak of the coronavirus disease (COVID-19) at Randall's Island Park in New York, U.S., March 29, 2020. REUTERS/Jeenah Moon 

Ducks are seen in a pigpen at a village in Henan province, China January 14, 2020. Picture taken January 14, 2020. To match Special Report SWINEFEVER-CHINA/EPIDEMIC REUTERS/Jason Lee 

Two male geese are seen during a traditional goose fight as part of celebrations of Maslenitsa, also known as Pancake Week, which is a pagan holiday marking the end of winter, in Suzdal, Russia February 29, 2020. REUTERS/Maxim Shemetov 

Two male geese fight as two females watch during a traditional goose fight as part of celebrations of Maslenitsa, also known as Pancake Week, which is a pagan holiday marking the end of winter, in Suzdal, Russia February 29, 2020. REUTERS/Maxim Shemetov 

Two male geese fight as two females watch during a traditional goose fight during celebrations of Maslenitsa, also known as Pancake Week, which is a pagan holiday marking the end of winter, in Suzdal, Russia February 29, 2020. REUTERS/Maxim Shemetov 

A red-crested pochard eats water plants in Svisloch river in Minsk, Belarus February 22, 2020. Picture taken February 22, 2020. REUTERS/Vasily Fedosenko REFILE - CORRECTING SPECIES 

A red-crested pochard rests in Svisloch river in Minsk, Belarus February 22, 2020. Picture taken February 22, 2020. REUTERS/Vasily Fedosenko REFILE - CORRECTING SPECIES 

A black swan swims at a zoo during snowfall in Almaty, Kazakhstan February 16, 2020. REUTERS/Pavel Mikheyev 

Mallards and mute swans rest on ice of a lake on the outskirts of Minsk, Belarus February 6, 2020. REUTERS/Vasily Fedosenko 

A mallard duck rests on a bank of Svisloch river in Minsk, Belarus January 17, 2020. REUTERS/Vasily Fedosenko 

Swans and seagulls feast on bread crumbs in Ohrid, North Macedonia January 14, 2020. REUTERS/Ognen Teofilovski 

Swans and seagulls feast on bread crumbs in Ohrid, North Macedonia January 14, 2020. REUTERS/Ognen Teofilovski 

Swans swim in a partly frozen lake during sunrise in Minsk, Belarus January 3, 2020. REUTERS/Vasily Fedosenko 

Swans swim in a partly frozen lake during sunrise in Minsk, Belarus January 3, 2020. REUTERS/Vasily Fedosenko 

Swans swim in a partly frozen lake during sunrise in Minsk, Belarus January 3, 2020. REUTERS/Vasily Fedosenko 

Ducks swim in Svisloch river in Minsk, Belarus November 26, 2019. REUTERS/Vasily Fedosenko 

Ducks swim in the reflecting pool between the Lincoln Memorial and the Washington Monument in Washington, U.S., November 14, 2019. REUTERS/Yara Nardi 

A duck is pictured at Tiergarten park in Berlin, Germany, November 14, 2019. REUTERS/Fabrizio Bensch 

A duck swims at Tiergarten park in Berlin, Germany, November 14, 2019. REUTERS/Fabrizio Bensch 

Ducks swim in a lake in a park in Saint Petersburg, Russia October 29, 2019. REUTERS/Anton Vaganov 

Ducks swim at a lake during a sunny autumn day near Belapatfalva, Hungary, October 27, 2019. REUTERS/Bernadett Szabo 

Mute swans swim in a lake during sunny autumn day on the outskirts of Minsk, Belarus October 27, 2019. REUTERS/Vasily Fedosenko 

A swan paddles on Loch Faskally, Pitlochry, Scotland, Britain October 26, 2019. REUTERS/Russell Cheyne 

A swan paddles on Loch Faskally, Pitlochry, Scotland, Britain October 26, 2019. REUTERS/Russell Cheyne