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The Ijima's Leaf Warbler is classified as Vulnerable (VU), considered to be facing a high risk of extinction in the wild.
Ijima's Leaf Warbler Phylloscopus ijimae was described by Stejneger in 1892 at first as Acanthopneute ijimae. Mayr and Cottrell (1986) described that it was first noted in 1882, but probably it is wrong. Ijima's Leaf Warbler has been considered as a subspecies of Western Crowned Leaf Warbler P. occitptalis with Eastern Crowned Leaf Warbler P. coronatus (Hachisuka et al. 1932, Ticehurst 1938, Yamashina 1941) or a subspecies of Pale-legged Leaf Warbler P. tenellipes (Williamson 1967). More