Читать книгу A Manual of Philippine Birds - Richard C. McGregor - Страница 260

 a1. Outer tail-feathers pale smoky or ashy brown.b1. Feet blackish; middle toe with claw not over 19 mm.c1. Tarsus slightly more than 20 mm.; sides of face and throat slightly rufescent in summer; rufous color predominating over the black above. minuta (p. 134)c2. Tarsus shorter, about 19 mm.; entire throat and chest bright rufous in summer. ruficollis (p. 135)b2. Feet olive-brown; middle toe with claw about 23 mm. damacensis (p. 136)

 a2. Outer tail-feathers pure white. temmincki (p. 137)