- Who
- Tyrannidae, tyrant flycatchers
- What
- 450 total number
- Where
- Not Applicable ()
- When
The largest zoological family of birds is Tyrannidae (the tyrant flycatchers), which contains 450 species as of October 2023, according to BirdLife International, though new ones are regularly being discovered and described. This means that this family represents around 4% of all known bird species.
Although exclusively New World in distribution, these insectivorous perching birds are found throughout North, Central and South America, and are extremely diverse in form. The family sits within the Passeriformes, the largest order of birds.