American robin

The robin is a very common bird.

It has a red chest. It also has a brown back.

These birds eat many things. They eat worms and bugs. They also eat berries and fruit. This food helps them stay strong. Robins build nests with grass and twigs. They use mud to hold it together. They are often the first birds to sing at dawn.

Their song has many parts that repeat. It is a busy and happy bird.

The American robin is a very common bird. It is the most common landbird in North America. There are about 370 million of them!

This bird has a brown back and a red chest. The color can look like dark red or light orange.

Some robins are even very pale with gray-brown colors.

Robins eat many different things. About 40 percent of their food is invertebrates. These are small animals like worms, beetles, and caterpillars. The other 60 percent is fruit and berries.

Because they eat so much fruit, they can live in colder places.

These birds migrate. This means they fly to new places when the seasons change. They fly south for the winter. In the spring, they fly back north to breed. They are often the first birds to sing at dawn.

Their song is made of small parts that repeat over and over.

The American robin is a very common bird in North America. It is a member of the thrush family. This bird is actually the most common landbird on the continent. There are about 370 million individual robins living there.

They are named after the European robin because of their reddish-orange breasts. However, the two birds are not closely related at all. The European robin belongs to a different family called flycatchers.

These birds have a busy way of living. They are most active during the day. At night, they gather in large flocks to rest in trees. This happens in thick bushes or quiet swamps.

When it is time to breed, they build very careful nests. They use coarse grass, twigs, paper, and feathers. They even smear the nest with mud to hold it together. They often use soft grass to make a cushion inside.

Scientists have studied these birds for a long time. Carl Linnaeus first described the species in 1766. He gave it the name Turdus migratorius. This name comes from Latin words. One word means "thrush" and the other means "to migrate." This name fits because the birds travel long distances.

A study in 2020 showed their closest relative is the rufous-collared thrush. This bird lives in Central America and acts much like a robin.

Robins eat a mix of different foods to stay healthy. About 40 percent of their diet is invertebrates. These are small creatures like earthworms, beetle grubs, and caterpillars. The other 60 percent of their food is fruits and berries.

They find worms by using their sight or hearing. They pounce on the worms and pull them up from the ground. Some robins even eat small mollusks on beaches. This diet helps them survive in many different places.

Many things in nature affect how robins live. They must watch out for predators like domestic cats. Hawks and snakes are also dangers to them.

When they eat in groups, they stay very alert. They watch other birds to see if danger is near. Some birds, like the brown-headed cowbird, try to lay eggs in robin nests. Most robins are smart enough to reject these strange eggs. This helps them care for their own young.

The American robin (Turdus migratorius) is a migratory bird belonging to the thrush genus and the wider Turdidae family. It is highly significant in North America as the most abundant landbird on the continent. According to the 2019 Partners in Flight database, there are approximately 370 million individual robins living there. This population size places them ahead of other common species like red-winged blackbirds and mourning doves. While they share a name with the European robin due to their reddish-orange breasts, they are not closely related. The European robin actually belongs to the Old World flycatcher family.

The American robin is a highly mobile species with a complex migratory pattern. They are widely distributed across North America, wintering from southern Canada to central Mexico and along the Pacific coast. Their migration distance varies significantly based on their starting habitat. For example, a study found that robins tagged in Alaska travel as much as 3.5 times farther during their seasonal journeys than robins tagged in Massachusetts. These birds are most active during the day, but they often assemble in large flocks at night to roost in trees within secluded swamps or dense vegetation.

The biology and diet of the robin are specialized for survival in various environments. Their diet consists of approximately 40 percent invertebrates and 60 percent fruits and berries. Invertebrates include creatures such as beetle grubs, earthworms, and caterpillars. Robins forage on the ground for soft-bodied prey, finding worms through sight or sometimes through hearing. They pounce on the worms and pull them up from the soil. Their ability to consume a high percentage of berries allows them to winter much farther north than many other North American thrushes. Interestingly, they have evolved to lose sucrase, meaning sucrose is unpalatable to them.

Reproduction for the American robin involves specific nesting behaviors and seasonal timing. They are among the earliest bird species to lay eggs, beginning to breed shortly after returning to their summer range. A robin's nest is a sturdy structure made of long coarse grass, twigs, paper, and feathers. They use mud to smear the nest together for stability and often add a cushion of soft grass inside. During the breeding season, males defend specific territories and become less social. They must also guard against brood parasites like the brown-headed cowbird, which lays its eggs in robin nests. However, robins can usually identify and reject these foreign eggs.

Taxonomy and the history of the species have been refined through centuries of study. Carl Linnaeus first described the species in 1766 in the twelfth edition of his Systema Naturae. He named it Turdus migratorius, which uses Latin roots meaning "thrush" and "to migrate." Modern science has used genetic studies to clarify their evolutionary history. A 2020 genetic study confirmed that the American robin is most closely related to the rufous-collared thrush of Central America. This research corrected older studies involving the mitochondrial cytochrome b gene, which had incorrectly suggested a possible link to African species like the olive thrush.

There are seven recognized subspecies of the American robin, each with distinct characteristics. The nominate subspecies, T. m. migratorius, breeds across much of the U.S. and Canada. In contrast, T. m. nigrideus is darker on the head and breeds in northern areas like Quebec and Newfoundland. The T. m. confinis subspecies is particularly unique because it is an isolated, non-migratory population in the Sierra de la Laguna mountains of southern Baja California. This subspecies is much paler than the others, featuring a gray-brown head and buffy orange underparts. Other subspecies like T. m. caurinus are found along the Pacific coast and are slightly smaller than the eastern birds.

Understanding the American robin also involves looking at their role in broader ecological and health systems. They serve as a reservoir for the West Nile virus, which is spread by Culex mosquitoes. While many birds die quickly from this virus, robins survive longer, which allows them to spread the virus to more mosquitoes. This makes them a key host in the transmission of the virus to humans. In terms of survival, robins must remain vigilant against predators such as domestic cats, hawks, and snakes. When feeding in flocks, they often watch other birds for reactions to these threats, using a social system to increase their chances of safety.