4 Verbs to Use for the Word chirruping

" C.N. gave another little chirrup of mirth.

The only things that reminded us of civilization, aside from what we carried with us, were the innumerable crickets that, through all the night, kept up their chirruping in the crevices of this rude fireplace.

Around, in sympathetic mirth, Its tricks the kitten tries, The cricket chirrups on the hearth, The crackling faggot flies.

The male birds of all the feathered creation are the only ones who sing; the females merely utter a sweet chirrup or chirp, so that from the hen canary the bird will run no risk of learning its natural note.

4 Verbs to Use for the Word  chirruping