Inside the Universes

'birdsong'

[birdcall.n.01] as in: the characteristic sound produced by a bird

Examples:
a bird will not learn its song unless it hears it at an early age

Origins

					birdsong (English)
├── bird (English)
│   ├── brid (Middle English (1100-1500))
│   │   └── bridd (Old English (ca. 450-1100))
│   └── burung (Malay (macrolanguage))
└── song (English)
    └── sang (Old English (ca. 450-1100))