A murmuration of migrating starlings is seen across the sky in southern Israel December 31, 2015. (Photo by Amir Cohen/Reuters)

A flock of starlings flies over Lake Leman on an autumn morning in the Lavaux near Grandvaux, Switzerland October 20, 2016. (Photo by Denis Balibouse/Reuters)

A flock of starlings is seen as they perform their traditional dance fly before landing to sleep during the sunset near the southern Arab Israeli city of Rahat, in the northern Israeli Negev desert, on February 2, 2015. (Photo by Menahem Kahana/AFP Photo)

In this February 5, 2014 photo, Divaldo Aguiar, who plays the part of Pachencho, is carried in a mock coffin during the Burial of Pachencho celebration, through a cemetery in Santiago de Las Vegas, Cuba. Cuban villagers stage a mock funeral and burial of Pachencho, with a living man playing the part of Pachencho, in a boozy festival that has become an annual tradition in this small town near Havana, held each February 5 for the last 30 years. (Photo by Enric Marti/AP Photo)

J. Schwartz (C) and Marianne Wittelsberger (2nd R) of Consumer Watchdog dress as members of the “Google Track Team” in a hallway of the Dirksen Senate Office Building prior to a hearing on Google September 21, 2011 on Capitol Hill in Washington, DC. Members of Consumer Watchdog attended the antitrust hearing dressed as the “Google Track Team” in white tracksuits emblazoned with Google's motto, “Don't be evil”, wearing “Wi-Spy” glasses and pretending to track unsuspecting people during the event. (Photo by Alex Wong/Getty Images)

These greenfinches go head to head in what appears to be a heroic fight or a playfull moment together, inspiration for a new version of “Angry Birds”, in Trezzo Sull'Adda, Italy in March 2013. (Photo by Marco Redaelli/IMP/AbacaPress.com)

These pictures show a rather annoying crow irritating an eagle. The crow tirelessly circles the bird of prey and repeatedly lands on his head – much to the crows displeasure. The encounter was spotted by Greaves Henriksen in Tamilnadu, India. The 52-year-old amateur photographer believes the eagle was sitting close to a nest, which the crow was trying to defend. Here: A crow lands on the eagles head much to the eagles displeasure. (Photo by Greaves B. Henriksen/Caters News Agency)

Rockhopper penguins live up to their name as they navigate the rugged coastline of Marion Island in the southern Indian Ocean. (Photo by Thomas P. Peschak)