The International Union for Conservation of Nature (IUCN) has assessed it as a least-concern species.

In 1952, Jean Théodore Delacour placed it within subspecies idoneus of B. seebohmi (now split into several species).

In the late 1980s, its song was found to be very distinctive, unlike other related species.

[3] In 2000, Pamela C. Rasmussen, Philip D. Round, Edward C. Dickinson and Frank Rozendaal described the population as a distinct species, Bradypterus alishanensis, based on its distinctive song and morphological observations.

[4] The Taiwan bush warbler is about 14 cm (5.5 in) long and weighs about 10 g (0.35 oz).

The head is dull rufous-brown, the crown having narrow dark tips.

The Taiwan bush warbler mostly sings in the morning and evening, starting in late March, and it has also been heard in winter.