Otani Chikara:
Palau Bush Warbler
Otani Chikara:
Iijima's Leaf Warbler イイジマムシクイ
Otani Chikara:
Styan's Grasshopper Warbler ウチヤマセンニュウ
Otani Chikara:
Sakhalin Leaf Warbler エゾムシクイ
Otani Chikara:
Mountain Leaf-Warbler