Tityridae: The Diverse Family of Neotropical Suboscine Birds
The Tityridae are a family of suboscine passerine birds—birds with a simpler vocal organ (syrinx) than songbirds—found throughout the forests and woodlands of the Neotropics. While they do not have a single, universally accepted common name, they are frequently referred to as tityras, mourners, becards, and their allies.
These small to medium-sized birds are characterized by their relatively large heads and short tails. The family exhibits a significant range in size, from the tiny buff-throated purpletuft, weighing just 10 grams and measuring 9.5 cm, to the substantial masked tityra, which can reach 24 cm in length and weigh up to 88 grams.
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Key Facts
- Distribution: Found exclusively in the Neotropics (Central and South America).
- Species Count: Contains 37 species divided across 7 genera.
- Size Range: From 9.5 cm (buff-throated purpletuft) to 24 cm (masked tityra).
- Classification: Part of the parvorder Tyrannida.
- Taxonomic History: Formerly split between the families Tyrannidae, Pipridae, and Cotingidae.
Taxonomy and Systematics
The family Tityridae was first introduced as a subfamily (Tityrinae) by English zoologist George Robert Gray in 1840, originally encompassing the genera Tityra and Pachyramphus.
For many years, the classification of these birds was fragmented. The genus Laniocera was placed in Tyrannidae, while Schiffornis was grouped with the Pipridae. Other genera, including Iodopleura, Laniisoma, Tityra, Pachyramphus, and Xenopsaris, were once considered part of the Cotingidae family. Later, based on the morphology of the skull and the syrinx (the vocal organ of birds), Tityra, Pachyramphus, and Xenopsaris were moved to Tyrannidae.
The modern concept of Tityridae as a distinct family was proposed in 1989, based on skeletal and syringeal features. This classification has since been validated by multiple scientific studies utilizing both mitochondrial and nuclear DNA analysis. Recent phylogenetic research from 2019 and 2020 further confirms their position within the parvorder Tyrannida.
Species and Genera
The family currently comprises 37 species organized into seven distinct genera. The most diverse genus is Pachyramphus, which contains the various becards.
| Genus | Common Name Group | Example Species |
|---|---|---|
| Tityra | Tityras | Masked tityra |
| Pachyramphus | Becards | Chestnut-crowned becard |
| Schiffornis | Schiffornises / Mourners | Brown-winged schiffornis |
| Laniocera | Mourners | Speckled mourner |
| Iodopleura | Purpletufts | White-browed purpletuft |
| Laniisoma | Laniisomas | Brazilian laniisoma |
| Xenopsaris | Xenopsaris | White-naped xenopsaris |
Frequently Asked Questions
What is the size range of birds in the Tityridae family?
The family ranges from the buff-throated purpletuft (9.5 cm and 10 grams) to the masked tityra (up to 24 cm and 88 grams).
Where are Tityridae birds found?
They are found in the forests and woodlands of the Neotropics.
How was the family Tityridae scientifically validated?
While initially proposed in 1989 based on skeletal and syringeal morphology, the family's existence has been confirmed through mitochondrial and nuclear DNA studies.
Which genus in the Tityridae family has the most species?
The genus Pachyramphus (the becards) is the most species-rich genus within the family.
What is a suboscine passerine?
Suboscine passerines are a group of birds characterized by a simpler syrinx (vocal organ) compared to the oscine songbirds.