Fig. 2.
The adult bird (A), egg (b, red arrow) and nestlings (B), 1 day old, (C) nestlings opened their eyes (12 days old), (D) The female left the nest-box (17-21 days old) (photographed by Yongke Zhu and Yun Fang).
The adult bird (A), egg (b, red arrow) and nestlings (B), 1 day old, (C) nestlings opened their eyes (12 days old), (D) The female left the nest-box (17-21 days old) (photographed by Yongke Zhu and Yun Fang).