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Scops owl

life science Maturity 5-7 Next article →

Scops owls are small, agile birds belonging to the genus *Otus*. This genus is the largest group of owls, containing 59 different species. These birds are primarily restricted to the Old World. They are known for their compact shapes and excellent camouflage. Many species have various brownish hues on their feathers. Some also have lighter undersides or faces. This coloring helps them blend into tree bark to stay hidden. Some species are even polymorphic, meaning they can appear in different color forms, such as greyish or reddish-brown.

African Scops owl
African Scops owl

To survive, scops owls use specific physical tools and behaviors. They are predators that hunt from perches in semi-open landscapes. They often look for old trees that have hollow cavities. These hollows serve as homes for their prey. A scops owl's diet is quite diverse. They eat insects, reptiles, and small mammals like mice or bats. They also consume small birds, earthworms, amphibians, and aquatic invertebrates. To catch and eat this food, they rely on a sharp sense of hearing. They also possess raptorial claws and a curved bill. These tools allow them to tear prey into small pieces that are easy to swallow.

Scops owls have unique social and reproductive patterns. Most of these birds are solitary, meaning they live alone. However, they are monogamous, which means they stay with one partner. During the nesting period, they use cavity nests originally made by other animals. The female sits on the eggs to incubate them. During this time, the male provides food for her. Most species only fledge one young per year. The young are described as altricial or semialtricial, meaning they are born in a helpless state and require significant care. In most species, the female is larger than the male.

Hibou Petit-Duc
Hibou Petit-Duc

The history of naming these owls involves many scientists. The genus *Otus* was introduced in 1769 by Thomas Pennant, a Welsh naturalist. He named it after the Indian scops owl. The name *Otus* comes from Latin and Greek words meaning horned or eared. In 1809, Marie Jules César Savigny proposed the name *Scops*. This name comes from the Greek word *skops*, meaning a small kind of owl. For much of the 20th century, scientists thought American screech owls belonged in this group. However, modern science has changed this view. Researchers used DNA sequence data to show that screech owls are actually a separate group called *Megascops*. This change was formally accepted by the AOU in 2003.

Taxonomy, or the science of naming and grouping living things, has shifted many times for these owls. In the mid-19th century, scientists began splitting the large *Otus* group into smaller genera. For example, the white-faced owls of Africa were placed in the genus *Ptilopsis* in 1851. In 1854, the white-throated screech owl was placed in the genus *Macabra*. Other groups like *Gymnasio* and *Gymnoglaux* were also established for specific owls. In the early 1900s, scientists tried to group them all back together. It was not until 1999 that studies of mtDNA cytochrome b helped clarify their true relationships. This genetic evidence proved that many of the older, separate groups should be accepted again.

African Scops owl
African Scops owl

Evolutionary studies suggest that scops owls and screech owls are very closely related. They may be considered sister lineages. This means they share a common ancestor and occupy similar ecological niches in different parts of the world. Scientists believe they evolved during the Miocene epoch. Fossil evidence shows that these lineages have existed for a long time. A screech-owl fossil from the Late Pliocene of Kansas is nearly identical to modern species. Similarly, scops owl fossils have been found on the Spanish island of Mallorca. While their exact divergence time is hard to estimate, DNA data suggests they may have evolved from Old World stock.

Hibou Petit-Duc
Hibou Petit-Duc

One of the most important ways to identify a scops owl is through its voice. You can often hear them before you see them. Scops owls give a whistling call or a series of high-pitched hoots. These calls occur at a frequency of four hoots per second or less. They use these sounds for social interaction or to scare away enemies. This is a major difference from screech owls. Screech owls produce piercing trills with more than four notes per second. Because their calls vary so much by species, experts use sound to tell them apart. Even a new, unfamiliar sound can lead to the discovery of a new species, as seen with the Serendib scops owl.

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File:African Scops owl.jpg
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