さえずsaezuru
1.

To produce a series of melodic or cheerful sounds often associated with small birds, creating a sense of liveliness or joy.

2.

To engage in light and often trivial conversation, typically characterized by a playful or teasing tone, often used to describe the chatter of women and children.

3.

To speak in a manner that may be difficult to understand, often with a sense of foreignness or local dialect, reminiscent of rural or exotic speech patterns.

Example:

空で鳥がさえずっていた。