- peep: make high-pitched sounds; "the birds were chirping in the bushes"
- the short weak cry of a young bird
- Bird vocalization includes both bird calls and bird songs. In non-technical use, bird songs are the bird sounds that are melodious to the human ear. In ornithology and birding, (relatively complex) songs are distinguished by function from (relatively simple) calls.
- A short, high-pitched sound made by a small bird; Of a small bird, to make short, high-pitched sounds sounding like "cheep"; The short, high-pitched sound made by a small bird