A baby Swan rides around on its mothers back at Tymon park on May 15, 2013 in Dublin, Ireland. This mother Swan has five cygnets that are almost two weeks old, every now and again she lets a lazy or very tired youngster ride around on her back as she and her other babies forage around the pond.

THOUSANDS of Arctic birds congregate on a cliff - as they nest hundreds of feet in the air. The guillemots swoop onto tiny ledges no more than a few inches wide to make their nest away from the harsh Arctic winds that lash Franz Josef Land, off the coast of Russia. It is estimated 55,000 birds breed on this 650ft cliff, making it the biggest colony on the the archipelago. The spectacular sight was spotted by wildlife photographer Pål Hermansen, 57, from a Russian icebreaker ship. The Norwegian said: "The density of birds is much higher here than elsewhere. All you can hear is a constant roaring noise in the proximity of the cliff. "This is the perfect nesting place for the birds, very close to rich fishing grounds. "They are colony breeders, laying their single, pear shaped egg, which restricts the egg from falling down when the bird flies off, directly on the cliff." Pål, a dentist from Oslo, Norway, said: "It is said that approximately 55,000 birds breed here. "The cliff is called Rubini Rock and is characterised by lots of hexagon basalt columns, curved and formed in different shapes over time."

DUBLIN, IRELAND - MAY 14: Frisky male drake is sent away by a not too eager mother mallard duck at Tymon park on May 15th 2013 in Dublin, Ireland. Mallard Drake tries to mate with the mother duck who was busy with her new born babies. PHOTOGRAPH BY Paul David Hughes / Barcroft Media

Baby Coaties play with their mother in the trees after being let out to see the public for the first time at Berlin Zoo on May 14, 2013 in Berlin, Germany.

SCHONBRUNN ZOO, AUSTRIA - MAY 15: Little emperor Tamarin is seen cuddling his parents on May 15, 2013 in Schonobrunn Zoo, Vienna, Austria. Little emperor Tamarin was born in the zoo of Vienna on May 04, 2013. He has a weight of 35 grams and is just 5 cm long without tail. This monogamous and endangered species belongs to Kasimir (father) and Christine (mother). These eye-catching monkeys of Kaiserschnurrbarttamarine offspring has a distinctive trademark: long and white mustaches. PHOTOGRAPH BY Animal Press / Barcroft Media

WUPPERTAL ZOO, GERMANY - MAY 15: "Moyo" the baby elephant walks around with mother on May 15, 2013 in Wuppertal Zoo, Germany. The little elephant was born without the help of any veterinarian in the Wuppertal Zoo of Germany on May 13. PHOTOGRAPH BY Animal Press / Barcroft Media