Passerines are called so because this order consists of a broad range of birds with highly developed
syrinx, a group of 7 muscles 7 with which birds produce music. 60% of all birds belong to this orde, amongst which the following families:
- Accrocephalidae - Reed warblers
- Aegithalidae - Long-tailed tits
- Alaudidae - Larks
- Bombiciliidae - Waxwings
- Calcariidae - Longspurs and Snow buntings
- More