Nepedia
Back to Discover
Advanced Reader
🧬

Tyranni

life science Maturity 5-7 Next article →

The Tyranni are a diverse suborder of passerine birds. They are often called suboscines by scientists. This group contains more than 1,000 different species.

Most of these birds live in South America. They are important for understanding how birds spread across the world. The name Tyranni comes from the genus Tyrannus. This group is distinct from the larger suborder Passeri, which contains the songbirds.

What makes suboscines different from songbirds is their anatomy. Specifically, they have a different structure in their syrinx musculature. The syrinx is the part of the throat used to produce sound. Because of this physical difference, scientists use the term suboscines. This anatomical distinction helps researchers classify these birds into their own unique group. It is a fundamental way to tell them apart from other passerines.

Scientists can trace the history of these birds back millions of years. The Tyranni likely originated in South America about 50 million years ago. Later, they spread to other parts of the world. They likely used a trans-Atlantic route to reach the Old World. This movement occurred during the Oligocene epoch. Fossil specimens found in Europe provide evidence of their presence during the early Oligocene.

Today, the suborder Tyranni is divided into two main infraorders. The first is the Eurylaimides. These birds are mostly found in tropical regions around the Indian Ocean. They include families such as the Pittidae, known as pittas. They also include the Philepittidae, or asities. Another group in this infraorder is the Calyptomenidae, which are African and green broadbills. The Eurylaimides also include the Sapayoidae, which contains only one American species: the broad-billed sapayoa.

The second main group is the Tyrannides. This group contains almost all the suboscines found in the Americas. It is a large group with many different families. One part of this group is the Tyrannoidea clade. This includes the Pipridae, or manakins, and the Cotingidae, or cotingas. It also includes the Tityridae, which contains tityras, sharpbills, and becards. The namesake family of this clade is the Tyrannidae, which are the tyrant-flycatchers.

Another major part of the Tyrannides is the group known as the tracheophones. This group contains several families like the Thamnophilidae, or antbirds. It also includes the Formicariidae, which are antthrushes. Other families in this clade are the Furnariidae, which include ovenbirds and woodcreepers. The Conopophagidae, or gnateaters, are also part of this group. There are also the Grallariidae, known as antpittas, and the Rhinocryptidae, known as tapaculos. Scientists once used a different arrangement for these birds. Sibley and Ahlquist used DNA:DNA hybridization to study them. However, that method did not reliably resolve the phylogeny, or the evolutionary tree. They originally suggested a more complex structure for the tracheophones.

Modern science uses molecular genetics to create more accurate family trees. A large molecular genetic study was published in 2019 by Carl Oliveros and his collaborators. This study used DNA to show the true relationships between the 16 families in the suborder. The results helped clarify the connections between the different clades. For example, it helped show a simple dichotomy between the antbirds and their allies and the tyrant-flycatchers and their allies. Understanding these genetic links is essential for modern ornithology. It allows scientists to see how these 1,000 species evolved from their common ancestors.

550 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

More to explore

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.