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Spoonbill

life science Maturity 11-13 Next article →

Spoonbills are a genus of large, long-legged wading birds known as Platalea. They belong to the family Threskiornithidae, which also includes the ibises. These birds are found on every continent except Antarctica. They live in warm temperate and tropical regions around the world. Most spoonbills prefer fresh water, but they can survive in salt water environments too. Their most famous feature is their unique bill. This bill is long, flat, and wide at the tip. The name Platalea comes from the Ancient Greek word platea, which means "broad."

Royal Spoonbill mouth open
Royal Spoonbill mouth open

Finding food is a very specific process for these birds. Spoonbills wade through shallow water to find prey. They keep their partly opened bills swept from side to side. This movement allows them to use their tactile senses, or sense of touch. When a small aquatic creature touches the inside of the bill, it snaps shut. These creatures include insects, crustaceans, or tiny fish. This feeding method requires a lot of effort. Because of this, spoonbills must spend many hours each day feeding.

Black faced spoonbill at Niigata
Black faced spoonbill at Niigata

Spoonbills have several specialized physical traits to help them survive. Their nostrils are located near the base of the bill. This placement allows them to breathe even when the bill is submerged in water. Their eyes are positioned to provide binocular vision, which helps with sight. However, they rely heavily on touch while foraging in the water. Like ibises, they also have bare patches of skin around their eyes and bills. These features work together to make them efficient hunters in shallow water.

Eurasian Spoonbill-2
Eurasian Spoonbill-2

Scientists have studied the history and classification of spoonbills for many years. The Swedish naturalist Carl Linnaeus introduced the genus Platalea in 1758. He included it in the tenth edition of his work, Systema Naturae. Later, George Robert Gray designated the Eurasian spoonbill as the type species in 1840. For a long time, scientists thought spoonbills formed one of two subfamilies called Plataleinae. Recent molecular studies have changed this view. A 2013 study suggested they form a clade, or a group, within the family. This group is separate from the clade containing New World ibises.

Platalea-alba-Lake-Nakuru
Platalea-alba-Lake-Nakuru

Genetic research has also revealed how different spoonbill species are related. A 2010 study looked at mitochondrial DNA to find these connections. The results showed that the roseate and yellow-billed spoonbills are each other's closest relatives. These two species descended from an early offshoot of the ancestors of the other four species. Some scientists argued these two should be in their own genera, named Platibis and Ajaja. However, because all six species look so similar morphologically, most keep them in the single genus Platalea.

Platalea flavipes - Mount Annan Botanical Gardens
Platalea flavipes - Mount Annan Botanical Gardens

There are six recognized species of spoonbill with different habitats. The Roseate spoonbill has pink feathers and lives in South America and the Caribbean.

042 Roseate spoonbill in Encontro das Águas State Park Photo by Giles Laurent
042 Roseate spoonbill in Encontro das Águas State Park Photo by Giles Laurent

The Yellow-billed spoonbill is white with a yellow bill and lives in Southeast Australia. The African spoonbill is a large white bird with a pink face. It lives in Africa and Madagascar. The Eurasian spoonbill lives in reed beds from the British Isles to Japan. The Royal spoonbill is a large white bird with a black face found in Australia and New Zealand. Finally, the Black-faced spoonbill lives in East Asia, including China and Japan.

Black faced spoonbill at Niigata
Black faced spoonbill at Niigata

Spoonbills also have specific ways of breeding and raising their young. They are monogamous, meaning they have one partner, usually for only one season. They build nests in trees or reed beds, sometimes near herons or ibises. The male collects nesting materials like sticks and reeds. The female then weaves these into a large, shallow bowl or platform. She lays a clutch of about three smooth, white, oval eggs. Both parents help to incubate the eggs. The chicks hatch one at a time and are born blind. Both parents feed the young through partial regurgitation. Interestingly, the chicks' bills are short and straight when they are young. They only develop the wide, spoon-like shape as they mature. While predators can be a threat, the primary cause of brood failure is starvation.

042 Roseate spoonbill in Encontro das Águas State Park Photo by Giles Laurent
042 Roseate spoonbill in Encontro das Águas State Park Photo by Giles Laurent
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🖼️ Images & Media (6)
File:042 Roseate spoonbill in Encontro das Águas State Park Photo by Giles Laurent.jpg
042 Roseate spoonbill in Encontro das...
File:Platalea flavipes - Mount Annan Botanical Gardens.jpg
Platalea flavipes - Mount Annan Botanical...
File:Platalea-alba-Lake-Nakuru.JPG
Platalea-alba-Lake-Nakuru.JPG
File:Eurasian Spoonbill-2.jpg
Eurasian Spoonbill-2.jpg
File:Royal Spoonbill mouth open.jpg
Royal Spoonbill mouth open.jpg
File:Black faced spoonbill at Niigata.JPG
Black faced spoonbill at Niigata.JPG
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