A newly hatched blackbird chick opens his beak alongside three other eggs in a nest in Frankfurt am Main, western Germany on April 13. (ARNE DEDERT/AFP/Getty Images) #

Nine-day-old giraffe Bine licks the nose of its giraffe aunt Andrea at Friedrichsfelde Zoo in Berlin,†Germany, May 9. The baby giraffe was born on 30 April during opening hours and numerous visitors were able to watch the birth. (STEPHANIE PILICK/EPA) #

Gray langur mother Sally holds her baby in its enclosure in Berlin's Zoo in Berlin. Gray langurs live in a community in which a single male lives together with several females and their offsprings. (JOHANNES EISELE/AFP/Getty Images) #

A young lowland tapir (R), who was born on April 30, is seen with its mother on the premises of the Zoo in Zurich, Switzerland, May 21. (ENNIO LEANZA/EPA) #

A prairie dog cub plays with a blade of grass on May 22, at the Zoo Hannover. A total of 17 prairie dogs were born between late March and mid-April. (JOCHEN LÜBKE/AFP/Getty Images) #

A baby dolphin, left, and its mother, named "Panama," swim together, April 22, at Miami Seaquarium. The female dolphin calf was born April 11 to the 20-year-old "Panama." (Wilfredo Lee/Associated Press) #

A baby rabbit sits amongst bluebell flowers in woodland in Scunthorpe, north-east England, on April 25. (LINDSEY PARNABY/AFP/Getty Images) #

Baby pygmy hippopotamus "Lani" eats with its mother "Ashaki" on May 17 at the Basel Zoo. It has been 14 years since a baby pygmy hippopotamus was last born at Basel Zoo. Lani came into the world on March 18, when it was still a little cold for her outside. Now, she joins her mother in the outdoor enclosure on warm, sunny days. Lani is one around 135 pygmy hippopotamuses in the European Endangered Species Programme. (FABRICE COFFRINI/AFP/Getty Images) #

A swallow feeds her babies in their nest under the ceiling of a residential house in Dongfeng township of Guiyang, Guizhou province, May 5. (Reuters) #

Two brown bear cubs play in their enclosure at Juraparc animal park near Vallorbe April 7. Ursina, an 18-year old female bear gave birth to two cubs, King and Zoe, the twelfth and thirteenth cubs of the park, on an unknown date in January 2014. The parent bears were separated before the birth to avoid conflict between the father and cubs. (Denis Balibouse/Reuters) #

Rizki, 10 months orphaned Bornean orang utan starts learning to bite and eating leaves at Surabaya Zoo as he prepares to be released into the wild on May 19, in Surabaya, Indonesia. The two baby orangutans, brothers, were found in Kutai National Park in a critical condition having been abandoned by their mother on May 14, 2014. The Centre for Orangutan Protection (COP) have since been nursing the animals back to health, treating them for malnourishment and 16 wounds predominantly to the feet and hands. (Robertus Pudyanto/Getty Images) #

A baby kangaroo looks out from its mother's pouch in the Zoo in Erfurt, central Germany, April 22. (Jens Meyer/Associated Press) #

A baby Yemen chameleon (Chamaleo calyptratus) crawls on the fingers of veterinarian Lidija Stanisic at her house in the outskirts of Zagreb, Croatia, May 19. Eight baby chameleons came into the world at the veterinarian house a few weeks ago. (ANTONIO BAT/EPA) #

Two meerkat cubs cuddle between adult animals in their outdoor enclosure at the zoo in Erfurt, Germany, March 19. (Jens Meyer/Associated Press) #

Newborn baby seal Conchita (R) and her mother Celia at the Boudewijn Seapark in Brugges. The baby seal is most likely female and is named after Austria's bearded transvestite and winner of the 2014 Eurovision Song Contest Conchita Wurst. In the event it does turn out to be a male, it will be named Conchito. (Boudewijn Seapark Animal Park via AFP/Getty Images) #

Spix Macaw chick 'Karla', weighing 26 grams, appears to be happily smiling as it is held by a keeper at the Association for the Conservation of Threatened Parrots (ACTP), in Schoeneiche, Germany, on April 17. Two Spix Macaw (Cyanopsitta Spixii) parrots, which are already extinct in the wild, hatched at the ACTP in the past few days. (PATRICK PLEUL/EPA) #

A white Bengal female tiger frolics with her three cubs, who were born in captivity, at the Huachipa's zoo in Lima on April 29. (ERNESTO BENAVIDES/AFP/Getty Images) #

A Common Mynah bird (Acridotheres tristis) feeds her baby in a nest on a hot afternoon in Bhubaneswar on May 4. The Common Myna is native to Asia and is an important motif in Indian culture. (ASIT KUMAR/AFP/Getty Images) #

Brown bear Mascha and her cubs peek out a cave at Hagenbeck zoo in Hamburg, Germany, April 11. (MAJA HITIJ/EPA) #

Vijay Singh has a run in with a baby alligator while trying to take his shot on the 7th during Round Two of the Zurich Classic of New Orleans at TPC Louisiana on April 25 in Avondale, Louisiana. (Chris Graythen/Getty Images) #

A baby peregrine falcon is held as Glenn Stewart, director of the UC Santa Cruz Predatory Bird Research Group places a band on its leg near the edge of the 33rd floor of the Pacific Gas & Electric building in San Francisco, May 7. Three young falcons got a band on each leg, one is the U.S. Fish and Wildlife Service bird band that shows a phone number to call in the event someone finds a peregrine, the other is a visual identification band that can be read from a distance with binoculars. (Jeff Chiu/Associated Press) #

A Java mouse-deer cub, one of the world's smallest hoofed animals, and its mother at the Fuengirola Biopark, near Malaga. The latest specimen of the world's tiniest deer -- a rare species no bigger than a hamster -- has been born in a nature park in southern Spain. The baby "deer-mouse" became just the 43rd living member of this species in Europe when it was born on April 9. (Jorge Guerrero/AFP/Getty Images) #

Almost two months old baby gorilla Diara lays in the arm of her mother Kumili on May 8, at the zoo in Leipzig, eastern Germany. (HENDRIK SCHMIDT/AFP/Getty Images) #

Mother armadillo Zowie, welcomes her newborn Southern three-banded armadillo baby at the Animal Ambassador Team, in Tampa, Fla. The baby was able to walk and roll into a ball within moments of its birth. Southern three-banded armadillos are the only species of armadillo that can fully roll up into a ball. The baby armadillo currently weighs 118 grams, which is about the weight equivalent to an average cell phone. (Busch Gardens Tampa/Associated Press) #

One of the two Red Panda cubs (right) born at the National Zoo and Aquarium gets a kiss from its mother Eilisha in Canberra, Australia, May 8. The Red panda is native to the eastern Hiimalaya's and China and is a threatened species. (ALAN PORRITT/EPA) #

A five-month-old still nameless bear explores its enclosure with its mother Huanca at the zoo in Duisburg. (ROLAND WEIHRAUCH/AFP/Getty Images) #

A Lemur catta, also known as ring-tailed lemur, with its three-week-old cub clinging to its back sits on a tree at the Schoenbrunn zoo in Vienna, April 4. (Heinz-Peter Bader/Reuters) #

Baby giraffe Madiba (L) stands next to his mother Etosha and other giraffes at the Tierpark Hagenbeck zoo in Hamburg, northern Germany, on April 16. (MAJA HITIJ/AFP/Getty Images) #

A young black-necked swan chick with its mother swim in a pond at the Zoo in Zurich, Switzerland, May 21. (ENNIO LEANZA/EPA) #

A rescued baby male Sumatran orangutan named Siboy undergoes rehabiliation at the Sumatran Orangutan Conservation Program center in Sibolangit district in northern Sumatra island. The orangutan was rescued by Indonesia's ministry of forestry personnel and Orangutan Information Center on April 15, 2014 in nearby Langkat district in a small patch of forest and agricultural plantation. The critically-endangered primates population are dwindling rapidly due to poaching and rapid destruction of their forest habital that is being converted into palm oil plantation. (SUTANTA ADITYA/AFP/Getty Images) #