A bald eagle feasts on a fish it snagged off the Susquehanna River near the Conowingo Dam, Wednesday, November 6, 2019, in Havre De Grace, Md. (Photo by Julio Cortez/AP Photo)





A laughing kookaburra perched on a tree branch. The bird is currently in third place in the competition to find the Australian bird of the year 2019. (Photo by Ken Griffiths/Alamy Stock Photo)





A lineated barbet (R) and a jungle myna (L) fight in the Morigaon district of Assam, India, 17 November 2019. (Photo by EPA/EFE/Stringer)





Sparrows forage in a park in Bole, Xinjiang, China. (Photo by CostFoto/Barcroft Media)





A crested ibis flies over the Muma River in Hanzhong, north-west China’s Shaanxi province. Crested ibises, with their red crests and long black beaks, were thought to be extinct in the country until seven wild birds were observed in Shaanxi in 1981, a discovery that prompted captive breeding and enhanced protection of the species. (Photo by Tao Ming/Xinhua News Agency/Barcroft Media)





Egrets search for food in the polluted Brahmaputra River in Guwahati, India. (Photo by Anuwar Ali Hazarika/Barcroft Media)





A tiny jacana chick strides confidently over Amazonian waterlilies on a lake next to the Rewa river in Guyana. (Photo by Kevin Rushby/The Guardian)





A cape vulture eats a chick at the International Centre for Birds of Prey, a conservation centre in Newent, Gloucestershire, UK. (Photo by Ben Birchall/PA Wire Press Association)





A yellow-headed blackbird perches a stalk of grass in a wetland near Sterling, N.D., on Friday, June 21, 2019. (Photo by Charlie Riedel/AP Photo)





Oriental Pied Hornbills eat a banana on a tree in Mayong village, on the outskirts of Gauhati, India, Thursday, November 7, 2019. (Photo by Anupam Nath/AP Photo)





A painted stork flies past as others scout for fish at Pulicat Lake in Sriharikota in southeastern state of Andhra Pradesh on November 27, 2019. (Photo by Arun Sankar/AFP Photo)





A young jackdaw rests on a fence post in Altheim, western Germany on November 3, 2019. (Photo by Thomas Warnack/dpa/AFP Photo)





Bohemian waxwings eating rowan berries in Kostroma Region, Russia on November 1, 2019. (Photo by Vladimir Smirnov/TASS)





A star duck on a tree in Yichun City, Heilongjiang province, China. (Photo by CostFoto/Barcroft Media)





A robin sings to defend its territory in a mixed deciduous woodland alongside the River Teifi near Cilgerran, Wales. (Photo by John Gilbey/The Guardian)





Wading birds including Avocet, Lapwing, Redshank and Bar Tailed Godwits gather on a pond at the RSPB's Cliffe Pools reserve at sunset on September 07, 2019 in London, England. In Autumn and Winter much of the UK's coastline, mudflats and estuaries become the home to millions of migratory waterbirds as they arrive from their breeding grounds in the Arctic Canada, Greenland, Iceland, Scandinavia or Arctic Russia to take advantage of our milder climate. Many more pass through on migration, stopping to refuel on their way. (Photo by Dan Kitwood/Getty Images)





A nuthatch on a tree in Minsk, Belarus on November 15, 2019. (Photo by Natalia Fedosenko/TASS)





Two juvenile long-tailed tits (Aegithalos caudatus) just after leaving the nest for the first time in Poole, Dorset, 29 April, 2019. (Photo by Jordon Sharp/Alamy Stock Photo)





A red-tailed hawk (Buteo jamaicensis) perching on a tree as it scouts for prey as a Baltimore oriole (Icterus galbula) lands nearby, in Orleans, Massachusetts, USA, 25 May 2018. According to scientists, since the 1970s the number of birds in North America (United States and Canada) has declined by three billion, almost 30 percent of its entire bird population. The findings, which raise fears that familiar species once so abundant in the 1900s could go extinct, point to ecosystems in disarray because of habitat loss and other factors yet to be specified, researchers added. (Photo by Matt Campbell/EPA/EFE)





A male Philippine eagle named Geothermica is seen in an exclosure at Jurong Bird Park in Singapore on November 27, 2019. Singapore unveiled two Philippine eagles at its main aviary November 27, the first breeding pair of the critically endangered raptors to be brought outside their native country as part of a conservation plan. (Photo by Roslan Rahman/AFP Photo)