Charadriiformes

Many birds live near water.

These birds are called shorebirds. They live in all parts of the world. Some live in deserts. Some live in thick forests.

Most shorebirds eat small animals. Some birds are very large. They eat fish from the sea. Other birds fly under the water to catch fish.

These birds are very old. They lived even when dinosaurs were here. Some lived in the cold ice of Antarctica.

It is fun to watch them. Do you like to watch birds?

Shorebirds are a big group of birds. There are about 390 species in this group. They live in every part of the world. Most of them live near water. They eat small animals like bugs. Some live in dry deserts. Other birds live in thick forests.

These birds have different ways of living. Some are called waders. They poke in the mud for food. Some are gulls. They are often larger and eat fish from the sea. There are also auks. These birds live on sea cliffs. They can fly under the water to catch fish.

Shorebirds are very old. Fossils show they lived during the time of dinosaurs. They are one of the few modern bird groups with such an old record. Some fossils were even found in Antarctica.

Shorebirds also have many ways of caring for their babies. Some mothers care for the eggs. In other groups, the fathers do the work. Scientists are still studying why they have so many different ways of raising their young.

Charadriiformes is a large group of birds that includes about 390 species. You might know them as shorebirds. These birds live in every part of the world. Most of them stay near the water to find food. They like to eat small animals called invertebrates. Some species live in dry deserts. Others live in thick forests or out in the deep ocean.

This group has many different ways of living. One group is called the waders. They probe in the mud or pick food off the surface. Another group includes gulls and their allies. These are often larger birds that take fish from the sea. Some gulls even live away from the coast. There are also auks. These birds live on sea cliffs and fly underwater to catch fish.

These birds have a very long history. Fossils show they are an ancient group. They are one of only two modern bird groups with fossils from the late Cretaceous period. This was the time when dinosaurs still lived on Earth. Some fossils were even found on Vega Island in Antarctica. These old bones help us see how birds changed over millions of years.

Scientists study many different families within this order. There are 19 families in total. For example, the Scolopacidae family has 98 species of sandpipers and snipes. The Laridae family includes 103 species like gulls and terns. The Alcidae family has 25 species of auks. Other families include plovers, stilts, and avocets. Each family has its own special way of surviving.

Shorebirds also show many ways of caring for their babies. Most birds have a system where the mother cares for the young. However, the ancestors of shorebirds evolved a system where both parents help. In the Scolopacidae family, the fathers often take the lead in care. Scientists are still trying to understand why these birds have so many different ways of raising their young.

Charadriiformes is a diverse order of birds that includes about 390 species. You might know them collectively as shorebirds. These birds are found in every part of the world. While most live near water, their habitats vary greatly. Some are pelagic, which means they live in the open ocean as seabirds. Others live in dry deserts or dense forests. This group is important for understanding how birds adapt to different environments.

Scientists organize this order into three main suborders based on how they live. The first is Charadrii, often called the waders. These are typical shorebirds that probe mud or pick items off the surface. They live in both coastal and freshwater areas. The second suborder is Lari, which includes gulls and their allies. These are generally larger birds that catch fish from the sea. Some gulls even live in inland environments or rob smaller species of food.

The third suborder is Alcae, which contains the auks. These are coastal birds that nest on sea cliffs. They have a unique way of hunting by "flying" underwater to catch fish. While auks look very different from gulls, they are likely related. Their unique shape is an adaptation for diving. This shows how different environments can change how a bird's body looks.

There are 19 different families within the Charadriiformes. The Laridae family is quite large, with 103 species including gulls, terns, and skimmers. The Scolopacidae family contains 98 species, such as sandpipers and snipes. The Alcidae family includes 25 species of auks. Other families include the Charadriidae, which has 69 species of plovers. There are also smaller families like the Burhinidae, which contains 10 species of stone-curlews and thick-knees.

The history of these birds is incredibly ancient. Charadriiformes are one of only two modern bird orders with a fossil record from the late Cretaceous. This means they lived alongside the dinosaurs. Scientists found a specimen on Vega Island in Antarctica that might be a very early member of this group. This bird looked somewhat like a modern thick-knee. Most complete fossils of undisputed members appear from the mid-Paleogene onwards.

Researchers have studied many fossils to trace their evolution. Some fossils, like "Morsoravis" from Denmark, are from the late Paleocene. Others include Jiliniornis from China or Boutersemia from Belgium. In the Miocene, fossils like "Larus" desnoyersii were found in France. These remains help scientists understand how the order changed over millions of years. Some ancient birds, called "Graculavidae," were once thought to be ancestors of many waterbirds. Now, scientists believe they were mostly early members of the Charadriiformes lineage.

One of the most interesting things about shorebirds is how they care for their young. They show more variety in parental care than most other bird orders. The ancestors of shorebirds likely used a bi-parental system where both parents helped. However, the Scolopacidae family evolved a system where the male provides the care. Scientists believe several factors influence these different strategies. These include how many birds nest close together or the ratio of males to females in a population.